All Stories by Emily Sohn
- Planets
Xena’s Mysterious Sparkle
Orbiting beyond Pluto, the recently discovered 10th planet reflects a lot of light.
- Earth
A great quake coming?
The 100th anniversary of the great San Francisco earthquake is a reminder that future quakes could cause even more damage.
- Planets
Saturn’s Strangely Warm Moon
Saturn's mysterious moon Enceladus may have liquid water close enough to its surface to produce giant geysers.
- Planets
Jupiter’s Second Red Spot
Several huge storms have merged to give Jupiter a second red spot.
- Health & Medicine
Prehistoric trips to the dentist
Thousands of years ago, some people had holes drilled into their teeth.
- Planets
Saturn’s rings created by collision
A shattered moon may have produced Saturn's dazzling rings.
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- Planets
Fiery Dust from an Icy Comet
Dust samples from a comet contain minerals that form only at high temperatures.
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- Animals
Ultrasonic Frogs Raise the Pitch
Some frogs that live in noisy streams communicate by using ultrasonic calls.
- Brain
How Much Babies Know
By studying how babies choose things, researchers have discovered that babies are especially good at learning things that are essential for survival.
- Fossils
Mammals in the shadow of dinosaurs
Not all early mammals that lived in the age of dinosaurs were shy and retiring.
