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00:00This is space, and this is an egg, moments before I attempted the world's highest egg drop.
00:05Now in an egg drop competition, in case you never had the chance to do it yourself in school,
00:09the goal is to build a contraption that can protect a raw egg from breaking when dropped from the tallest height possible.
00:14So my original plan was to drop an egg in a contraption I built from the world's tallest building.
00:19But humans are always building taller buildings, so if I really wanted to future-proof this record,
00:24I realized I would need to go all the way to the top and straight to outer space.
00:28And when I started on this journey three years ago, I knew if I could draw my experience of landing stuff on other planets,
00:34I would be guaranteed the record.
00:35But what I didn't know is this would be the most physically, financially, and mentally draining video I would ever attempt.
00:42But first, let me just explain what I was thinking.
00:44The plan was to clamp an egg to the front of a rocket, then attach that rocket to a weather balloon and take it up to space.
00:50Once there, the weather balloon would release it, and just by using gravity only,
00:54the rocket would eventually accelerate past Mach 1, breaking the speed of sound,
00:58and then it would autonomously adjust the forefins on the back to steer itself to the target location,
01:03and then at 300 feet above the ground, it would release the egg,
01:06which would free-fall onto a mattress that we'd placed on the ground.
01:09And that all seemed pretty straightforward.
01:11So like any good engineers would, we broke the problem down into smaller steps,
01:15starting first with calculating the terminal velocity of an egg.
01:19And by terminal velocity, I mean that any object, including humans, have a maximum speed at which they fall
01:25once the force of Earth pulling you towards it balances with the pushback force
01:29from bumping into more and more air molecules as you start to fall faster.
01:32For humans, that max speed is about 120 miles per hour,
01:35and after doing some simple math for an egg, it tops out at 75 miles per hour.
01:39So to make sure the egg wouldn't break if we dropped it onto a mattress at its terminal velocity,
01:43we ran our first test.
01:44And since we couldn't find a tall enough building whose lawyers would agree to let us hurl an egg off the side
01:49and onto a mattress, we had to improvise a bit.
01:5683.
01:57Yes! Check the egg!
01:59No cracks.
02:00So our mattress will protect an egg even if it's traveling faster than its terminal velocity.
02:06It's a good start.
02:08The next step in our DIY space program was to head back to my friends
02:12in the small farming town of Gridley, California, which is the place where he broke the Elephant Juice base world record,
02:16where the plan was to set out a target mattress for the egg to land on in the middle of a field,
02:21with a little bit of margin built in just in case.
02:23All right, so we've got the smoke charge back here,
02:25so that as we're like coming down from the sky, we want to be able to pick it out.
02:29This is the computer.
02:30Here's the fins.
02:31This, by the way, is Joe, and he has a fascinating channel called BPS Space.
02:35And what makes him especially cool is he didn't go to school for any kind of engineering degree.
02:40He's all self-taught, and recently even landed a launched rocket SpaceX style after seven years of trying.
02:46Joe was in charge of tracking and guiding the rocket to the mattress using these movable tail fins,
02:51whereas I was in charge of the payload.
02:52In other words, how we would keep the egg from freezing on the way up in a little oven with heaters
02:56which would break away before we dropped, along with the mechanisms to release the egg itself.
03:01Release the egg!
03:01And the purpose of this first trip to Gridley was a flight characterization test.
03:07Basically, before we spent all the time and money taking the balloon all the way up to space,
03:10we were here just to do a low-altitude test at 10,000 feet
03:13just to prove to ourselves we could steer the rocket using the fins.
03:17We're setting all sorts of world records out here.
03:19World's largest mattress, fastest egg, tallest egg drop.
03:23What could possibly go wrong besides like 4,000 things?
03:28And so with everything more or less in place and ready to go,
03:31all we needed now was an official egg.
03:33Which thankfully, Gridley has an abundance.
03:36Hi!
03:37I'm sorry.
03:38This is terrifying.
03:41Okay, okay, okay.
03:43No, no, no!
03:45Hey, hey.
03:49The precious egg.
03:51In the history of our universe, this is the first chicken that's ever laid an egg that will go faster than the speed of sound.
03:59Super Sonic.
04:00Mach 1.
04:02I'm sorry.
04:03I'm leaving.
04:03Congratulations.
04:04So the next morning, we got up at 4 a.m.
04:07when the winds would be the most calm to run through all our final pre-launch preparations.
04:11Loading up our lovely egg.
04:12Including the last-minute decision to add a metallic streamer to the back of the rocket to make it easier to visually track.
04:18We've got redundancy all over the place here.
04:20We've got redundant leads, redundant igniters.
04:22Mark has two servos on the fairing.
04:25No dumb failures.
04:26And that's exactly when we had our first dumb failure.
04:29All right.
04:30Ah!
04:31The GPS is mad.
04:33Uh, we gotta scrub the launch.
04:35We were just walking back.
04:37I get the eggs all bloop, and it pooped it out.
04:39And scrubbing the launch meant we unfortunately had to release all the helium out of the balloon, which is an opportunity I'm not gonna let just pass on by.
04:47Hello.
04:47Wow.
04:48That's so cool.
04:50And back at home base, we ran some tests that confirmed our hypothesis that since the GPS unit was right at the back of the rocket,
04:56the last-minute addition of the metallic streamer was interfering with the GPS signal.
05:00And that messed up the rocket's math in calculating its speed, so it thought it was time to release the egg.
05:05So early the next morning, we were back at it with a few modifications,
05:08the most important being swapping the metallic tracking streamer with one made from plastic.
05:13Good news is there's hardly any wind today.
05:16Bad news is it's about 20 degrees colder, which means our mattresses are kind of frozen.
05:21Nevertheless, we pushed forward.
05:23Don't trip.
05:25Mark.
05:25As I very carefully delivered the rockets to the new balloon launch site.
05:29Send it.
05:30Send it, baby.
05:31Go send it.
05:40It's happening.
05:41Should we see it?
05:42Oh, yeah, yeah.
05:43I see it.
05:44I see it.
05:44I see it.
05:45Oh, there it is.
05:51And while the whole thing looked really cool.
05:54So we might be in trouble.
05:57We quickly realized the balloon was rising at a slower rate than we anticipated.
06:01We're already south and we're only halfway up.
06:03Which totally threw off the predicted trajectory.
06:06And so after a few more minutes, we decided to manually drop the rocket.
06:09Because we were already way too far off course for the rocket to make up the lateral distance
06:13to the mattress using just the fins and gravity.
06:15Three, two, one, clicked.
06:22Oh, boy.
06:23That's not good.
06:24And that's when we encountered the second problem of the day.
06:27As the fins actively forced the rocket into an uncontrolled death spiral.
06:31Altitude is 1,400 coming down fast.
06:42Well, it landed somewhere.
06:43Check the mattress just in case.
06:45And since we have the GPS coordinates of the rocket, we headed out to track it down.
06:49The real question is, what's the status of the egg?
06:52Mark, I think I might have some bad news for you.
06:54At which point we stumbled on an entire field of sitting birds, which is another opportunity
06:59I'm not going to let just pass on by.
07:01That's a shoot, man.
07:06Is that a shoot?
07:08There's no egg.
07:09The egg did release.
07:10The fact that this is out means the egg did come out.
07:12So that's good.
07:13But despite that silver lining, the movable fins seemed to be actually forcing the rocket
07:17into that tailspin, which was surprising.
07:19Because Joe had definitely run through a lot of analysis and testing before coming here.
07:24So after conducting a thorough review of the footage and firmware, he was able to locate
07:28and fix a single rogue negative sign in the code that seemed to be causing all the control
07:33issues, which meant we were ready to give this one final try.
07:37We had run out of spare parts and spare weather balloons.
07:40So regardless of outcome, this would be the final attempt.
07:43If we couldn't land the egg on a mattress from 10,000 feet up, we wouldn't have any hope
07:48of pulling it off, coming all the way down from space.
07:51Phenomenal!
07:52That's nerdy space talk for everything is exactly as expected.
07:56I'm standing in the middle of the world's largest mattress, where hopefully the egg will
08:01be landing in like 45 minutes.
08:05Otherwise, we're pivoting.
08:06And my new video is world's largest mattress.
08:09So I'm arming the rocket right now.
08:12The last step.
08:13All right, old girl, you're in for a ride.
08:16Three, two, one.
08:19Let it ride, baby.
08:21Woo-ha!
08:24Looking good so far.
08:25We're at 500 meters.
08:27Now, in order for the balloon to hit the target mattress, for each launch, we'd start it from
08:30different spots around Gridley, which raises an interesting question maybe you've wondered
08:34yourself.
08:35How do big balloons, like hot air balloons, steer themselves?
08:39Or I guess even just know where they're going to land?
08:41And the answer is, computers know the wind direction and speed at every height as you
08:46go up.
08:46So on a given day, if these are the predicted wind directions and speeds, we would need to
08:50launch here to be directly above the mattress when we got to 10,000 feet.
08:54But how we know all this information is the fascinating part.
08:57Because every day, it's someone's job to launch two balloons like this into the sky at noon
09:02and midnight London time.
09:04But this is done in over 1,000 locations all around the world at those same two exact moments.
09:10And these balloons all have something called a radio sawn attached to them that measures
09:14things like altitude, pressure, temperature, and wind.
09:17And then they transmit the information back to the ground stations, which gets fed into
09:21supercomputers.
09:22And that's the reason weather and wind predictions can be so accurate.
09:25So 2,000 of these massive weather balloons go up every day and then eventually pop and
09:30just land somewhere.
09:31And since they're transmitting a signal, some folks make a hobby out of just trying to track
09:35them down.
09:36How close are we to the drop point?
09:38Balloon release?
09:39Balloon release.
09:40That's it.
09:41And this time, we were releasing right in the target drop zone, which was good news on one
09:45hand, but it raised some new challenges on the other.
09:48Where is it?
09:51Grab a chair!
09:56400.
09:56Grab a chair!
09:57See something?
10:04Altitude, 98 meters.
10:09I think we're down.
10:11Everyone okay?
10:13That was exhilarating.
10:15So we were much closer this time, and we even managed to steer the rocket in the right direction
10:19just slightly.
10:20We found it.
10:21Yeah.
10:24Egg?
10:24No egg!
10:25No egg?
10:26Wait a minute.
10:28It's the egg!
10:29It's the egg!
10:30Oh, did it crack?
10:31I mean, it's not crack.
10:33So after three failed attempts, we still seemed pretty far off from where we needed to be,
10:38which meant it was time for the ultimate phone of friend with my buddy Adam Stelzner, who
10:41you might recognize as this guy from when we landed Curiosity on Mars.
10:46Touchdown confirmed.
10:47Receive on Mars.
10:48He has a PhD from Caltech, and he's also the chief engineer for Perseverance and Mars
10:53Sample Return.
10:53And so after explaining to Adam what we were trying to do, he immediately spotted a fatal
10:58flaw in our brilliant plan.
11:00And you're doing terminal guidance to something about the size of a house.
11:04How are you going to do that?
11:05How do you do that?
11:07I mean, I know how you physically do that.
11:09How do you not get busted by the FAA?
11:11In other words, we were basically attempting to make a precision-guided missile.
11:15Dude, there are thousands of people who have done this before, and they are sworn by federal
11:19law not to say a single f***ing word to you.
11:22And to be fair, he raised a good point.
11:24The people who could help us actually can't.
11:27And even if we figured it out ourselves, the ethics of just slapping that how-to video
11:31up on YouTube are questionable at best.
11:34And so after a fruitful discussion with Adam...
11:36But we release at about the height...
11:38And then we do a lobbing.
11:39The thing you start to worry about is heating.
11:41You might want to start with a two-stage thing.
11:43We decided to pivot.
11:44And instead of a precision-guided egg landing on a mattress in a small town, we would set
11:48our sights on a much more general egg landing target by heading out to the desert.
11:52But as part of the pivot, we completely scrapped our old design and spent a couple months
11:56designing and building a new system that borrowed heavily from the Curiosity landing, because
12:01we figured if it could safely put a rover on Mars, it could safely land an egg on Earth.
12:05So we would still go to space on a weather balloon, but this time the rocket would have
12:08fins that didn't move, and it would be three times as long and four times as heavy to guarantee
12:13we would get the egg to supersonic speeds on the way down.
12:16Then just like NASA separates the cruise stage in the upper atmosphere and then uses aerobraking
12:21to dissipate a bunch of the energy and speed, we would separate from the back half
12:24of the rocket about halfway down, after we'd already broken the sound barrier, and because
12:29this is now weighed much less, it would naturally aerobrake and reduce its speed to the new
12:34lowered terminal velocity.
12:35Then on Mars, the next step is the parachute deploy, followed by the heat shield separation,
12:40and we would follow in kind by launching our own parachute and then release our own nose
12:45cone, which would then expose our set of cushioning airbags, as you can see here, which we borrowed
12:50from the Spirit and Opportunity landings.
12:53It was intentionally ambitious and extremely complicated, but after a couple months of
12:57complete redesigning and building, we found ourselves in the desert, feeling cautiously
13:02optimistic.
13:03And that was due in part to our lucky orange parachute, because when I left NASA, my friends
13:07gave me this rectangular piece of nylon.
13:09And for scale, that's the exact same rectangle here that's part of the parachute the Curiosity
13:14rover used to land.
13:16So that piece of parachute is actually one of the 80 rectangles you see here, as they were
13:20running the final tests in the world's largest wind tunnel.
13:22And so it only felt fitting that after some scribing, a bit of cutting, and a little sewing,
13:29it had nobly repurposed itself for the new mission.
13:32So as the sun went down, back at the hotel, we worked late into the night on final preparations.
13:38This was an idea and a passion project three years in the making.
13:41And it took a staggering amount of work even to get us to this point.
13:46We had thought and prepared for so many things that could go wrong, and while I was feeling
13:51optimistic, I knew at the end of the day, it was the laws of physics that would ultimately
13:55determine our fate.
13:58So early the next morning, the crew in charge of the balloon got to the launch site to start
14:02filling it up.
14:03And this balloon looks a little different than the others, because it's a zero-pressure weather
14:07balloon.
14:07The advantage these have over a typical weather balloon is they can go higher up into space,
14:11carry more weight, and they're open on the bottom, which means they equalize to the pressure,
14:16and it's impossible for them to pop.
14:18So when you want it to come down, you send a signal that will pull down on a string that's
14:21sewn into the side of the balloon, and it opens like a zipper and self-destructs.
14:26The downside is they're incredibly lightweight and so thin and delicate, you have to be really
14:30careful and touch it with gloves.
14:32And then we're about an hour into filling it with the four massive takes of helium we had on
14:36hand when we made a gut-wrenching discovery.
14:43Hey dude, I got bad news.
14:47We have to scrub.
14:48Start taking the helium out of the balloon.
14:55Launch the scrub.
14:57They had some issues that I guess they can't resolve by today.
15:01So we're sucking out the helium from the balloon and trying for another day.
15:08What are you talking about?
15:15Are you serious?
15:18Now for context, Joe was in charge of this part of the rocket, and me and my team were in
15:22charge of all of this.
15:24And while we'd each tested our individual systems ad nauseum, it wasn't until that morning
15:29that we were able to test the integration of the two systems together.
15:32And when we did, it became immediately clear to me I had made a critical oversight.
15:37So, tension compression, this is great.
15:40It's holding on to that thing fantastically.
15:42The problem is, this is so long and heavy, as soon as it wiggles, it's going to want to
15:48bend.
15:49Great in tension compression, but this happening at Mach 2 is...
15:52That's not going to work out.
15:54There's no other balloons in the world of this size that we can get access to.
16:02This was the only one for like another month.
16:04We're trying to save this one so we can hopefully reuse it.
16:07But any slight little damage, you touch it in the wrong spot, and now that's an imperfection
16:12that may actually be a failure point for a future mission.
16:16And this was an absolute low point for me.
16:19The integration of two independent systems is such a classic failure point in engineering.
16:24I was crushed I had missed this.
16:27And financial concerns aside, I felt like I had just let everyone down.
16:31Not just my team and the rest of the crew helping out, but all the other folks, some of whom drove
16:37six hours to come out and watch as well.
16:41But that's the thing with failures.
16:42They can sting like crazy, but it's really just a process to learn one more way not to do
16:48a thing.
16:49And so even as I sat there feeling pretty bad like any good engineer, I was already coming
16:53up with a list of all the things we were going to fix to get back out here and try this
16:58dang thing one more time.
17:00And this principle of resiliency is something I think can be learned.
17:04In fact, I believe this so much, I started a toy company called Crunch Labs with the express
17:08goal of helping kids think like an engineer.
17:11So with the BuildBox, not only do you get a super fun toy that you put together every month,
17:15but you do it alongside me while I teach you all the juicy physics of how it works.
17:19We're right there in the trenches building and succeeding together so the principles really
17:24sink in.
17:25So if you're a kid and you're looking for something to put at the top of your Christmas
17:28wish list or you want to gift it to someone else so you can be the household hero, just
17:32head to crunchlabs.com or use the link in the video description.
17:36Now as far as my plan to bounce back from my own failure, we did four things to really get
17:41serious and stack the dice in our favor for the final launch.
17:44First of all, we fixed the connection point with more of a sheath design that could handle
17:48the bending moment.
17:49And then at the right altitude, it would autonomously separate the two halves with a black powder
17:53charge.
17:54Second, we ran some vacuum and temperature tests on a raw egg.
17:57There's no air pressure and it's really, really cold in space.
18:00So if you don't do something to protect the egg for the two hours it takes the balloon to
18:04get up to space, it will freeze and crack the egg every time.
18:07So we tested some heaters in our egg chamber and proved that they keep the egg warm enough.
18:12Third, we built redundancy into our system.
18:14When NASA sends something to Mars, they can't go there to fix it.
18:17So it just has to work.
18:19And for that reason, a lot of critical systems have backups.
18:22Even the part of my own hardware and curiosity that accepted a dirt sample from the arm into
18:27the belly of the rover had two doors that opened to the exact same place in case one of
18:32the doors ever stopped working.
18:34In our case, redundancy meant making a two-foot-wide custom beach ball that we would stuff with
18:38a second egg surrounded in packing materials with a 20-foot streamer on the back we would
18:43just drop like a rock.
18:45It would be dead simple.
18:46No parachutes to deploy, no autonomous timing sequences, and no fancy mechanisms.
18:52This would be our redundant, yet I would argue kind of boring, second chance opportunity
18:56to land a safe egg.
18:58Then fourth, and finally, we went to a local crane yard to test both our solutions at their
19:03respective terminal velocities, starting first with the beach ball.
19:06Come on, baby!
19:08Oh!
19:09She's alive!
19:11And after that, we tested the final landing configuration of the rocket.
19:17Oh, yeah!
19:18Oh, yeah!
19:19Oh, yeah!
19:20By the way, the actual rover parachute held perfectly.
19:23Mwah!
19:24And so after all that, we made this six-hour trek back to the desert for what I was really,
19:29really hoping would be the last time.
19:31Hey, guys!
19:32After four failed attempts, we had learned so much, which left me feeling cautiously optimistic.
19:39And right out of the gate, we got two bits of really good news.
19:42The first relates to that super delicate zero pressure balloon we had to reuse from the
19:46last launch because there was no possible way to get a replacement.
19:49Just barely touching the balloon leaves it stressed and creates a weak point for it to
19:53tear, so I was obsessively checking the fish scale reading that would give us the verdict.
19:58The force reading is 37.6 kilograms of buoyancy force pulling this up.
20:04Importantly, it's not changing.
20:06If it were changing and going down, that means we would have a leak, but it's holding steady
20:11at 37.6.
20:12That's a big deal.
20:14And the second piece of good news is my buddy and warm-blooded good luck charm Al Chen had
20:19arrived.
20:20You might recognize Al as the other guy here with Adam, and he's the one who actually said
20:23this.
20:24Touchdown confirmed.
20:25We're safe on fire.
20:26If we were successful, he'd be the one to make the official call.
20:31And so after all the requisite last-minute preparations and three long years, it was finally time for
20:37liftoff.
20:38Ready?
20:39Three, two, one.
20:40Ukraine!
20:41Whoa!
20:42Whoa!
20:43Whoa!
20:44Whoa!
20:45Whoa!
20:46Whoa!
20:47Whoa!
20:48Whoa!
20:49Whoa!
20:50Whoa!
20:51Whoa!
20:52Whoa!
20:53Whoa!
20:54Whoa!
20:55Whoa!
20:56Whoa!
20:57Whoa!
20:58What the right rate was just we predicted and that meant we for sure didn't have a leak and
21:00things were finally breaking our way.
21:02Is that how it's supposed to look?
21:04Yeah.
21:05And it takes about two hours to get all the way up to space.
21:08Whoa.
21:09So once the balloon hit 30,000 feet,
21:11we decided to hop in the car so we could drive over to the
21:14predicted landing spot about 45 minutes away.
21:17So far, it's all systems nominal.
21:19Balloons in the air, it's ascending at the right rate.
21:22We've passed some critical threshold points,
21:25and we're still in the game.
21:27Fifth time is the charm, as they say.
21:30And we eventually started outrunning the balloon in the car,
21:32so we pulled over for a bit as we reached an important
21:35altitude milestone of 100,000 feet.
21:38I would say over 100.
21:39Woo!
21:40Over 100.
21:41That's 19 miles up and two and a half times higher
21:44than a typical commercial plane flies.
21:46And because the balloon expands so large as it rises,
21:49we realized we could actually even spot it from the ground,
21:52which was awesome.
21:54Oh, yeah, no, I see it, yeah.
21:56Dude, that's totally it.
21:58What wasn't awesome was when moments later, Joe,
22:01while looking through the binoculars,
22:03made this gut-wrenching observation.
22:05It looked really big and then it looked really small.
22:07You saw it small?
22:08Yeah, it seems to be smaller.
22:11But it's just weird that it would just completely disappear.
22:14Which was followed by a devastating call
22:16from the balloon tracking team.
22:18It dropped within the last two minutes.
22:20Yeah.
22:21That's 30,000 feet over the last however,
22:23so it's just popped.
22:24But these don't pop.
22:25There's zero pressure.
22:27And that's true.
22:28They don't pop.
22:29But unbeknownst to us,
22:30while we were looking at it from the ground,
22:32the rocket and beach ball had been spinning around and around
22:34relative to the balloon for about 10 minutes.
22:37This meant the cord that attaches to the string
22:39that self-destructs the balloon
22:41was getting wrapped around tighter and tighter
22:43until it was so tight it pulled down on the balloon string
22:46that is designed to essentially unzip and destroy itself.
22:50And so before we even had the chance to release the rocket
22:53and beach ball from the balloon,
22:54it all started coming down in one big tangled heap
22:57at 150 miles per hour,
22:59which is way faster than the eggs could survive.
23:01Well, let's start driving.
23:03And as we drove over, all I could think about
23:07was how our fate would rest solely in the hands
23:09of the redundant systems we'd put in place.
23:11We think it's probably about two miles up that way.
23:17This was our Apollo 13 moment.
23:19If our payload could autonomously jettison itself
23:21from the tangled rocket balloon mess at 20,000 feet,
23:24then it would be able to deploy our lucky orange parachute
23:27and land the egg safely on its airbags.
23:30And as we parked, we knew what was done was done.
23:33There was nothing left to do but go on a hunt
23:35to find the wreckage and reveal our fate.
23:38I see something orange.
23:40That looks like a rover parachute.
23:42Okay.
23:43We've got a thing.
23:47And seeing the payload all by itself was a huge deal
23:50because it meant it had actually autonomously ejected itself
23:53from the mangled weather balloon mess at 20,000 feet.
23:56And later when we checked the footage,
23:58this is exactly what it confirmed.
24:00And while that was incredible news,
24:02I knew by this point not to get my hopes up.
24:05I mean, so let's look through the window.
24:07A little bit of dirt.
24:08Let's see.
24:09Good. Definitely touchdown, but.
24:10Touchdown confirmed.
24:11Whether or not we're safe on Earth is TVD, right?
24:14Let's check it out to be sure.
24:15Oh, man.
24:22Touchdown confirmed.
24:23We're safe on Earth.
24:24We're safe on Earth.
24:25That is a hot egg.
24:29Was in space and now it's on Earth and it's not broken.
24:34After that, we tracked down the beach ball,
24:36which as far as I was concerned,
24:37was just extra credit at this point.
24:39This is the backup, the simple solution,
24:41the true engineer solution here.
24:43Oh, my God.
24:45Touchdown confirmed.
24:48Look at that.
24:49We're safe on Earth.
24:50We are safe on Earth.
24:51Two for two, baby.
24:53Two for two.
24:54And as we walked away with two uncracked eggs in hand,
24:58I was reminded that in life things rarely unfold
25:01how we think they will,
25:02but by learning from your failures coupled
25:04with a bit of tenacity,
25:05us humans can accomplish a feat as incredible
25:08as the world's smartest Martian robot
25:10or as ridiculous as the world's tallest egg drop.
25:15You know what would be cool?
25:16Because, like, I hope you learned something
25:18by watching this video,
25:20but how much more would you have learned
25:22if you were out there in the desert with me
25:24helping to, like, troubleshoot and put the rocket together?
25:27Well, I got great news for you,
25:29because I got the next best thing,
25:31and it's called the Crunch Labs Build Box.
25:33It's a toy that gets delivered right to your doorstep every month,
25:36and then we build it together
25:37while I teach you all the juicy physics that make it work.
25:40You're basically unlocking your own personal Mark Rober video every month
25:43where you learn a new engineering principle
25:45that will have you not just building like an engineer,
25:48but more importantly, thinking like an engineer.
25:51So you develop that resilience and those problem-solving skills.
25:55And by the way, don't go sleeping on just how cool the toys
25:58we'll be building together actually are.
26:02Like this insanely accurate rapid-fire disc launcher,
26:05or this linkage-powered drawing machine,
26:07or this Rube Goldberg-style catapult launcher
26:09that will leave you feeling like you just landed your own dang egg from space.
26:13And I should mention that Crunch Labs is a real place.
26:16It's where we designed all these boxes,
26:18and it's got a tennis ball cannon,
26:20and the world's longest Hot Wheels track,
26:22and a foam pit,
26:23and a bunch of other cool inventions.
26:25And each month when you open your box that comes in the mail,
26:27you have a chance to find the platinum ticket.
26:29And if your box has it,
26:31that means you and your family get to come out and visit me and my team for a day,
26:34and we'll build some cool stuff together.
26:36So if you want to embark on this year-long journey with me
26:39and make a sad Christmas tree like this a happy Christmas tree,
26:43just go to crunchlabs.com or use the link in the video description
26:47where we're giving away two months free as a holiday special.
27:04so that's a great game.
27:05so you can pick up the dates and get to go to bed.
27:06Now, it's kind.
27:07you'll just pick them up up.
27:08Let's go to the next few seconds.
27:09So I'm just going to like the second one.
27:10it's going to go to the next one.
27:12I'm just going to like the second one,
27:13and I'm just going to wanna like the next one,
27:14and this one time,
27:15I kind of wanna pick some too hard,
27:16and I'm just going to be really cool.
27:18So I don't know where I'm going to get that.
27:19I didn't know where I'm getting that hard.
27:20I'm getting that hard.
27:21I'm going to have a bigger of the things.
27:23So I think I'm going to add a little bit.
27:25I've got some good stuff.
27:27You
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