Yep. 90% of species on Earth will be gone in 100 years. Coral bleaching, bottom trawling and pollution ought to pretty much kill off the ocean food chain. Deforestation, desertification and pollution will do the same on land.
All thanks to one particularly stupid and selfish type of ape which thinks it's better than all the other species. And even then they won't get it.
Don't worry something (probably something Man has set in motion) will kill us down to manageable levels. We're at a boiling point and there's no way to turn down the heat. We're addicted to lifestyles which destroy entire ecosystems, but so separated from the destruction as to be completely mindless of it. Everything comes a nice package; clean, shiny and ready to consume. We don't see the blood, the exploit, the rape of the environment, and frankly we don't want to.
Even if we did want to acknowledge the consequences of our habits, turning back would require a huge conscious effort and yeah ...that'll happen. People wait for everyone else to do the right thing for them, doubting that their own "sacrifices" would make a difference, doubting that others would reciprocate.
What are ya gonna do though? We can't suddenly become a communal society; recycling, minimizing waste, lowering our overall negative enviromental footprint. That would require a huge conscious effort. "Honey where's the $#%$# remote!" We just wanna watch football, eat chips, go to work.. live life like those who came before us.. until one day our kids or their kids are gasping the poison air and puking up the tap water. How do you stop it?
How does Joe sixpack lower his negative impact? He wants to. Joe cares, but he doesn't know how. Who will tell him? Who can he trust? Who should he believe? Oh it's all so confusing. Meanwhile, he drives his SUV to Wallmart and picks up another 300 pieces of molded plastic in a typical shopping excursion.
Meteor? Disease? Volcanic winter? Nuclear? Global Warming related climatic problems? Somehow nature will cull the herd.