Facts and Fancies About Amber
It's taken scientists a long time to figure out what amber is made of, and what we can learn from it.
Can a Supernova Cause Mass Extinction?
Since the 1950s, scientists have been proposing supernovae as catalysts for mass extinctions. But can it be proven?
How Far Does the Periodic Table Go?
Efforts to fill the periodic table raise questions of special relativity that “strike at the very heart of chemistry as a discipline.”
Voyager 2 Heads into the Unknown
Forty-one years after its launch, Voyager 2 has officially crossed out of the solar system and into interstellar space. What has it discovered along the way?
Meeting Earth’s First Animals at the Burgess Shale
The Burgess Shale is a huge deposit of unique fossils that reveals records of the middle Cambrian, a vital period in evolutionary history.
What’s Inside Mars?
Everything scientists think they know about the interior of Mars is based on indirect observations. NASA's new InSight Lander aims to change that.
A Scientific Look at Citizen Science
Citizen science involves using large numbers of volunteers to collect data for scientific research. But does it result in usable data?
Remembering Coral Conservationist Ruth Gates
Dr. Ruth Gates worked tirelessly to conserve coral reefs, promoting a controversial idea called assisted evolution.
Asteroids Are Windows to the Past
Japan’s space agency has landed rovers on Asteroid Ryugu. The photos and samples from the mission will reveal a lot about asteroids.
Why Do Some People Have Curly Hair and Others Straight?
Either environmental or sexual selective pressure began acting on hair after humans began dispersing out of Africa.