tag:blogger.com,1999:blog-8278510471239667560.post3202813694531302996..comments2024-03-29T01:41:15.713+00:00Comments on Kensington Gardens and Hyde Park birds: Ralph Hancockhttp://www.blogger.com/profile/11686354797977020917noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8278510471239667560.post-55278129756578608312015-07-02T16:02:41.298+01:002015-07-02T16:02:41.298+01:00Is this the official wisdom now? I've seen it ...Is this the official wisdom now? I've seen it advanced as speculation, but that was before people started doing clever things with isotopes. Also, is oxygen, only one place beyond nitrogen in the periodic table, heavy enough to make any difference to buoyancy?Ralph Hancockhttps://www.blogger.com/profile/11686354797977020917noreply@blogger.comtag:blogger.com,1999:blog-8278510471239667560.post-82040324074641445462015-07-02T12:14:42.699+01:002015-07-02T12:14:42.699+01:00The hyperoxic conditions of period resulted in inc...The hyperoxic conditions of period resulted in increased air density with the concomitant increase in buoyancy that allowed the evolution of these giant insects. Interestingly the increase in oxygen based free radicals from such an atmosphere is thought to have sparked the evolution of biochemical pathways needed to deal with the toxic effects of these free radicals.Anonymoushttps://www.blogger.com/profile/12681776165615269441noreply@blogger.com