Like I said, pretty much no one is denying global warming. However, the question is whether humanity is responsible or not. Climatologists say not really, environmental scientists say completely.
I think those two groups are more arguing over who takes center stage. The end result is still that humans need to cut it out and stop contributing to the process. Even if it isn't global warming...all these things are bad for our species and the other species we rely on to survive. We're not very good at being humble and lots of people sluff off extinctions but eventually those missing plants and animals are really going to harm us. Nature takes care of itself really well but we're cramping its style.
There's hope. We've got new ways to build things, cars that are completely recyclable, hopefully cars in the near future that have even cleaner exhausts with zero pollution (we're doing well with many new cars being very low pollution), houses, electronics, and consumable items that don't pile up in dumps but are recycled to be used again and again. We're making progress so its not all doom and gloom.
But the world is changing. The Pentagon estimates that the environment will be the biggest national security threat within 15 to 30 years overshadowing terrorism in a big way. More extreme weather is going to reduce crop yields. I'll really worry when North America stops making a surplus in food. Thats when things are going to get stretched. More effort needs to be made by the people up to...they do it too slowly...but at least we're generally moving forward rather than back.
