Katharine Gammon
Reindeer Are Vanishing
A new study predicts massive population declines in the Arctic
Sugar, the Secret Plant Thermostat
It could help plants grow at temperature extremes
How Heat Hurts Teamwork
Even small increases in heat can make teamwork harder—especially when groups are mixed.
Sleep Has No Magic Number
People who sleep according to their culture’s norms are healthier overall
Smells Like Friend Spirit
How everyday scents can influence friendships
When Earth Was a Pale Green Dot
The planet’s first photosynthesizers dined on green light
The Surprising History of Scientific Ballooning in 11 Missions
It started with farm animals—now it’s revealing secrets of the cosmos
When Fish Follow You
Some wild fish may recognize individual humans in the sea
What Megalodons Tell Us About Gigantism
The biggest predator ever to have lived was a skinny beast
The Language of Tree Rings
Turning tree ring science into art