00:00In the making, the mystery can be found scattered across Australia's sunburner.
00:17By the magic of time-shifted GPS, it does the rest.
00:20Selected the beginning.
00:26Within minutes, your dodging maps are longer.
00:31Caution, hazardous wildlife.
00:33Another lump of rock, metal, ice and dust in orbit.
00:38The heat came not only the size of Mars, crossed Earth's path.
00:48So we're all...
00:50Reading that diary in the lab has been a revelation.
00:55It did rewrite the geology books.
01:00That doesn't happen.
01:03The great thing about Wool Creek Crater is because it's so fresh, relatively speaking...
01:08It was formed only recently by an object probably only a few yards across.
01:17It probably looked like this.
01:20And to see what it looked like, we need to head...
01:22The storm of life.
01:28Make the shallow water twice as salty as...
01:31Be left alone.
01:33Let surface in the sea.
01:36It's the ultimate living rock.
01:38As Asian of those distant shores began...
01:41Is a puzzle that scientist David Flannery...
01:43In a range of shapes and sizes...
01:48...being the hottest town in Australia.
01:51Though the biological origin of the oldest fossils is still debated...
02:01Smoke on the horizon.
02:03Not oxygen.
02:07But beneath the waves, fine ore deposits of the Pilbara are the direct economic legacy of the rusting of...
02:13Every year over 33 million tonnes of ore...
02:18Bang it together, it sounds like metal.
02:22Even the dinosaurs.
02:26And the oxygen hadn't...
02:30Without the oxygenation of the atmosphere...
02:34Long geological rut...
02:36That they've dubbed this period...
02:38The...
02:40But...
02:42That gave the Cryogenian its name.
02:44These were the most severe ice ages...
02:46In the planet's history.
02:48Recorded as a couplet of...
02:51With the sea floor protected by a ceiling of ice.
03:09But for a million years...
03:12Or even 10 million years...
03:15It's very hard to imagine anything surviving...
03:18Such a cold, cold world.
03:24By the great thaw...
03:29Acheron.
03:33These are some of the oldest multicellular animals to be...
03:38One of the puzzles is all certain...
03:40Is that there were things moving about on the sea floor...
03:43Looking for food.
03:44Let's just go here...
03:45Move and feed on the sea...
03:46The central Australia...
03:48Sparkling through...
03:49Into the first seas...
03:51Of the Cambrian...
03:59Ediacaran...
04:01But now...
04:02Suddenly...
04:03Things that might not look out of place on a seafood platter...
04:07Were scurrying...
04:09Hunters...
04:10And the hum...
04:14The smooth...
04:16It ended up here...
04:18About 20 miles away...
04:20Of the earth...
04:25...recargo onto the bare earth...
04:27And Australia...
04:29Was ruined...
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