From Eurekalert: "The Paleozoic period, about 300 million years ago, was a time of huge and abundant plant life and rather large insects -- dragonflies had two-and-a-half-foot wing spans, for example. The air's oxygen content was 35% during this period, compared to the 21% we breathe now, Kaiser said. Researchers have speculated that the higher oxygen concentration allowed insects to grow much bigger."Wow! 35% oxygen? Imagine the lift to your step! Imagine the forest fires!
Guess it's not atomic radiation after all. Link
Update 10/25 9:08 am: Just heard them cover this on NPR's "Living On Earth."
3 comments:
I practice Aikido here in Albuquerque at an altitude of 5000 feet. This really gives me an advantage when I go to a seminar at a dojo that is at sea level. I've got a lot more red blood cells transporting oxygen than the guys I'm working with.
Look out, guys, Giant Bug, coming through!
Are you trying to tell us that you're transgenic, Steve?
Just Photogenic.
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