Use our interactive simulator to experiment with climate change mitigation strategies and come up with answers of your own!
Explore brain anatomy, brain function, brain imaging, and neural activity associated with memory and learning
Explore Earth images at night. Use online satellite images to zoom in on your hometown or view places far away. Compare satellite images from 2003 and 2012 to infer changes in population, energy consumption, energy efficiency and economic activity. What patterns of human activity can you find?
Compares satellite images from 1993, 1997 and 2003 to infer changes in population, energy consumption, energy efficiency and economic activity.
Climate can exhibit abrupt shifts over large regions of the world. As the last glacial period was giving way to the current warm interglacial period, average temperatures in Greenland returned to glacial levels for more than 1,000 years. This unusual period, which is called the Younger Dryas, ended abruptly about 12,000 years ago. Evidence from an ice core drilled in Greenland indicates that temperatures there rose approximately 15°F (8°C) in less than a decade. No Audio.
During the last Ice Age, approximately one-third of all land was covered by glaciers. Glaciers reached as far south as New York City. This huge volume of ice reduced the amount of water in the oceans, which lowered sea level by several hundred feet. As a result, a land bridge joined Siberia to Alaska, making travel between the two continents possible. No audio.
The effects drought on the Cheyenne Bottoms Wildlife Wetlands area in central Kansas, as seen in satellite images from 2010 (left), 2011 (middle), and 2012 (right).
Carbon is continually exchanged between the atmosphere, ocean, biosphere, and land. There are short- and long-term cycles at work.