I'm afraid we've not only fucked ourselves, but are fucking the planet into a runaway greenhouse effect within 50 years. It happened to Venus, and it didn't have the human virus to contend with.
If so, it's gaiacide.
From
The Guardian, 1998:
Super-Computer Predicts Runaway Greenhouse EffectFindings from Britain's Hadley Centre for Climate Change presented to 170 countries in Buenos Aires show that parts of the Amazon rain forest will turn into desert by 2050, threatening the world with an unstoppable greenhouse effect.
The startling findings are the result of billions of calculations made by the world's biggest super-computer, installed at the Hadley Centre in Berkshire. The latest figures show the earth is heating up fast, with 1998 already the hottest year since reliable records began 140 years ago.
...
Perhaps the most startling finding is the prospect of a runaway greenhouse effect after 2050. It has been thought that the speed of global warming would be moderated by the extra growth in plants and trees made possible because of more carbon dioxide in the atmosphere. This carbon dioxide fertiliser effect stimulates plants to grow faster.
http://www.globalpolicy.org/socecon/envronmt/glowarm4.htmAnd it could be a little something like this:Within a few years, the situation goes totally out of hand. Temperatures just keep on rising. And as they do, more and more water on Earth begins to evaporate. The sea level starts to drop again. If you’re one of those poor souls who had his country or city flooded when the ice caps melted, you might be glad to find the sea retreating again. But don’t put that flag out yet. What you’re witnessing, is the end of the world. Nothing more, nothing less.
Here’s how it goes. As the temperatures rise, more water evaporates. But as more water evaporates, our atmosphere gets thicker -- causing the temperatures to rise even more. And as the temperatures rise even more, even more water evaporates. And as even more water evaporates... You got it: there’s a chain reaction going on. The dreaded ‘runaway greenhouse effect’ has just kicked in.
Governments and scientists will desperately look for a way to turn the tide. But they won’t find one. There’s just no way you can stop something as mighty as the Earth’s climate. Although our politicians might still mumble some reassuring words to prevent a general panic, deep within they will realise how bad the situation really is. A few years more, and our planet will no longer be habitable. All life is about to vanish from the planet formerly known as Earth. There is no escape, not even a remote possibility things will improve.
You can see the best evidence for that hovering in the night sky: the planet Venus. For many years, scientists wondered why Venus has an atmosphere so hot that lead and tin actually melt in it. Only in the late 1990s they realised that Venus too has undergone the runaway greenhouse effect. Its atmosphere is so dense, incoming solar heat cannot escape from it.
http://www.xs4all.nl/~mke/Runaway_greenhouse.htm