Those Poor Dinosaurs

I have a class about dinosaurs, and today we learned about why they became extinct. I always thought (and was taught) that there were a ton of different theories and that no one really knew why. Apparently, they really think they know why, and the reason was a 10 kilometer wide meteor that struck the earth on the north corner of the Yukatan Peninsula. The impact was bigger than a 10 (on the Richter scale) earthquake, caused tsunamis, forest fires, and spread debris into the atmosphere. And the poor dinosaurs died. On one of the lecture slides, there was a picture of some dinosaurs looking nervously up at the sky as meteorites flew through the sky. They looked scared, and I felt sorry for them. They had no idea what was coming.

And about global warming, there is definite evidence that it is true. Global climate change, global warming... same thing. Maybe it's not true, but don't scoff at it in your ignorant certainty. I've been given the impression that global warming is a politically left thing and that the environment in general is a 'left' issue. Is that true? If so, why?

I am currently uploading videos on Facebook of my trips. They are short videos (my camera would only allow videos up to 30 seconds), but I think they are nice, little memories that would have been otherwise forgotten.