The Big Picture

Here you can get a quick but comprehensive overview of the current state of the planet.

Gapminder brilliantly allows you to visualize world demographic trends

Dashboard for the planet

Top 10 polluted places

AAAS Atlas of Population & Environment

Earth

Video overview (6 min. Includes soil, Wangari Maathai, effect on air quality)

Air

http://video.nationalgeographic.com/video/player/environment/environmental-threats-environment/state-of-the-earth/air.html Video overview]

Fire

Al Gore TEDTalk 20 min. video

Water

video overview

Want to know more? Check out these general environmental websites:

Envirolink

Google green index

Yahoo index

United Nations environmental info

Friends of the Earth

Global Stewards