00:00our planet is changing at a record pace in fact experts say that human-caused climate change has
00:09even forced earth into another extinction event that's largely due to the burning of fossil fuels
00:14and changes in the chemical makeup of our air and now experts say that our atmosphere has more co2
00:19now than it has for millions of years researchers looked back some 66 million years taking into
00:26account both biological and geochemical signatures since finding that in 2023 there's more co2 in the
00:32atmosphere than there has been since the middle miocene period or around 14 million years ago
00:38the study's lead author told agents france press quote it really brings it home to us that what we
00:42are doing is very very unusual in earth's history with that same news outlet pointing out that this
00:48is in contrast to previous estimates which suggested that co2 levels were on par with those of only three
00:53to five million years ago experts say this is an important metric as humans only evolved around
00:58three million years ago with the researchers adding that our civilization is tuned to sea level as it is
01:03today to having warm tropics and cool poles and temperate regions that have a lot of rainfall and
01:08global emissions continue to rise with some predicting that by 2100 co2 levels could reach those of the
01:15aeocene period or the same level as those 30 to 40 million years ago
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