Giant Creatures of the Ancient World #podcast #science

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[SebastianWellsTL]

Love your channel! Congratulations on 200k subscribers!

[SaintTrinianz]

Animals are smaller because there are fewer trees. Trees use carbon dioxide and release oxygen. An oxygen rich atmosphere produces larger animals.

[brandyfinley]

Why does there need to be giant animals? Size is irrelevant and relative, if your an amoeba then a squirrel is gargantuan, there is not a direct proportion between size and longevity, a terrior will live longer than a mastiff.

[miketinker]

Oxygen levels were 30 percent back then compared to 13 percent today

[commentator]

What about sloths and the tiny horses?

[scottcollins]

Wrong large animals are down to the simple fact oxygen was more enriched

[et-alia]

Not to body shame, and this is totally a joke, but dude has a large cranium RIGHT NOW

[spatrk]

evidence for what?
i totally missed the point.

[chadgdry]

The air was much more oxygen-saturated, so creatures could get much bigger and the O2 would support those massive metabolism

[mikehinkley]

How long does a horse live?
They're much bigger than a human and humans live to be 80-100 years old.
A horse must live to 1000 if a larger body size correlates to a longer lifespan.

[euphoricmayhem]

The oxygen levels were much higher back then and evolution played a big part as well.

[Mark-hs]

Yes, oxygen levels were higher in the atmosphere.

Please keep in mind that this does not mean some people lived for over 900 years.

[tobyalsip]

A lot of them were also smaller you're just cherry-picking history dude miniature horses miniature elephants