- Coral reefs are one of Earth's most beautiful and vital ecosystems—and they are declining at a rapid pace. Mike Field, Chief of the USGS Pacific Coral Reef Project, talks about the importance of coral reefs and how pollution, climate change, and other factors are affecting them
- The Lower Yellowstone Falls, Yellowstone River, taken in Yellowstone National Park, Wyoming, USA on January 1st, 2010.
- While the Souris River was in the throes of record high flooding in Minot, N.D., O.C. Fisher Lake near San Angelo, Texas, was experiencing the exact opposite for a number of years - a ground-cracking drought.