How Shrinking Sea Ice May Be Shrinking Polar Bears
How is the body mass of polar bears changing as sea ice disappears? The answer may depend on where they live and feed.
4:35
In Idaho, A Battle Over Climate In The Classroom
The Idaho legislature is debating how to address human-induced climate change in revised science education standards.
5:01
The Earth’s Ozone Woes Haven’t Gone Away Yet
While the ozone layer above the poles is on the mend, the health of the layer in middle latitudes is less clear.
How Jellyfish Helped A Marine Biologist Find Her Calling
Juli Berwald recounts not the not-so-straight path that led to her work as a marine biologist.
12:05
The Fiery Mountains Under The Sea
Most of the world’s volcanic activity happens under the sea—but we know very little about it.
Breakthrough: Bitter Water
For Navajo hydrologist Karletta Chief, water is sacred. When a mine spill contaminated a vital river in the Navajo Nation, she decides to investigate the potential environmental and health impacts it had on her community.
8:11
Protecting The Waterways Of The Navajo Nation
Hydrologist Karletta Chief monitors the rivers that flow through the Navajo Nation that have been impacted by runoff from surrounding mines and help the surrounding communities.
16:39
The Surprising Life Inside Frozen Soil
Microbes and root systems create a cozy ecosystem amid the icy earth.
6:59
Alan Alda Wants To Know: ‘What Is Climate?’
In his annual Flame Challenge, Alan Alda is calling on scientists to answer a seemingly simple, but complex question.
12:23
Mining Coal For Clues About Ancient Environments
Geologist Jen O’Keefe uses pollen and spores fossilized in coal to study the environment millions of years ago.