7:26
Boeing 737 Max Grounded As Crash Investigation Continues
Aviation regulators around the world removed Boeing’s 737 Max 8 jets from service following two crashes within six months.
4:19
How Climate Change Ruins Snowflakes
How does warm air distort snowflake shapes? And in New York, a citizen science project asks just how bad it is.
17:05
Youth-Led Climate Change Protests Heat Up
On Friday, students across the world join together in the Youth Climate Strike to protest government inaction against climate change.
The Many Emotions Of Animals
In this excerpt of “Mama’s Last Hug” by Frans de Waal, learn about the animals that express gratitude, seek revenge, and are even hopeful.
4:46
Jet Stream Brings California Rain, But Not Relief
Research suggests California’s wet winter will not save it from a harsh wildfire season.
6:10
Trying To Determine Forest Health? Look To The Lichens
The types of lichens living in a patch of forest may be a better indicator of ecological health than the trees themselves.
16:58
The Leg Bone’s Connected To The Ankle Bone—But Why?
The story of how our skeletons evolved to look they way they do.
The Secrets Of The Extraordinary Human Skeleton
From shoulders to skulls, learn how our bones made humans unique in this excerpt from “Skeleton Keys” by Riley Black.
7:01
Blue Skies Forever? It’s Not As Cheery As It Sounds
Extreme conditions during climate change could cause the disappearance of stratocumulus clouds—for good.
5:10
Rethinking Recycling In Philadelphia Suburbs
China won’t take our subpar plastics anymore. What’s next for your local recycling plant?