The maximum extent of Arctic sea ice in 2020. (Image credit: NASA's Scientific Visualization Studio.) Of course, the United States is not the only country to operate climate instruments on satellites.

July 15 marks World Arctic Sea Ice Day, a campaign organized by Polar Bears International to raise awareness about the rapid loss of sea ice on our planet's northern cap.

July 15 marks World Arctic Sea Ice Day, a campaign organized by Polar Bears International to raise awareness about the rapid loss of sea ice on our planet’s northern cap.

July 15 marks World Arctic Sea Ice Day, a campaign organized by Polar Bears International to raise awareness about the rapid loss of sea ice on our planet’s northern cap.

What happens in Antarctica doesn't stay there Losing Antarctic sea ice is a planetary problem. Sea ice acts like a giant mirror reflecting sunlight back into space. Without it, more energy stays ...

Sea ice acts like a giant mirror reflecting sunlight back into space. Without it, more energy stays in the Earth system, speeding up global warming, intensifying storms and driving sea level rise ...

July 15 marks World Arctic Sea Ice Day, a campaign organized by Polar Bears International to raise awareness about the rapid loss of sea ice on our planet’s northern cap.