"Worried about your impact on the environment? The way we use the planet's resources makes up our ecological footprint. Measuring yours takes less than 5 minutes and could set you on a life-changing journey... "
This is still in beta, but this site includes pictures, videos and other cool stuff from the Smithsonian Institution and other sources, all about the ocean and what is in it.
This is a wonderful citizen science project where users are asked to classify animals on the Serengeti from camera traps to help real scientists survey and track populations of important and endangered wildlife.
http://ictmagic.wikispaces.com/Science