I read this alarming article about predictions by James Lovelock...
"Gaia" scientist says life doomed by climate woes (commentary by Culture Change)
LONDON, Feb 25 (Reuters) - Climate change will wipe out most life on Earth by the end of this century and mankind is too late to avert catastrophe, a leading British climate scientist said.
James Lovelock, 89, famous for his Gaia theory of the Earth being a kind of living organism, said higher temperatures will turn parts of the world into desert and raise sea levels, flooding other regions.
His apocalyptic theory foresees crop failures, drought and death on an unprecedented scale. The population of this hot, barren world could shrink from about seven billion to one billion by 2100 as people compete for ever-scarcer resources.
I expect considerable extinction, but I suspect "most life on Earth" is an exaggeration. The most numerous lifeforms -- beetles, ants, molds, microbes, that sort of thing -- will probably survive just fine. We'll lose a lot of the megafauna. We may lose a lot of humans. But unless we irradiate it to death, the biosphere will survive.
Still, not a pretty picture, and Lovelock isn't a flake. If he's that worried, he's probably onto something, even if the details may be pushing it. Or heck, maybe he's just shouting in hopes of being heard and listened to for a tenth of what he's pushing.