Space
Exoplanet Census Suggests Earth Is Special after All
A new tally proposes that roughly 700 quintillion terrestrial exoplanets are likely to exist across the observable universe—most vastly different from Earth
Mind
How Nazi's Defense of "Just Following Orders" Plays Out in the Mind
Tech
![6 Supercool Tech Toy Standouts at the 2016 International Toy Fair [Slide Show]](/sciam/cache/file/E34F7C9D-962F-4CFB-B0FBC8B0EDCBC630.jpg?w=280&h=187)
6 Supercool Tech Toy Standouts at the 2016 International Toy Fair [Slide Show]
Biology
Swim Like a Butterfly? Sea Snail 'Flies' Through Water
Health
Health
Wounded Soldier to Receive First U.S. Penis Transplant
The Sciences
The Sciences
A Day on Pluto Reconstructed From New Horizons Images
Sustainability
Sustainability
Tigers Have Just 1 Safe Habitat in Southeast Asia
Sustainability
Sustainability
Just 1 Word for Maine's Future: Seaweed
Health
Health
Testosterone Supplementation Brings Modest Benefit to Older Men
Most Popular
Babies Already Have an Accent
A study in the journal Current Biology finds that babies, because they listen in the womb, cry in distinctive ways that reflect the language spoken by their parents. Karen Hopkin reports, with commentary by Christopher Hopkin
Gravitational Waves Discovered from Colliding Black Holes
The LIGO experiment has confirmed Albert Einstein’s prediction of ripples in spacetime and promises to open a new era of astrophysics
What Sparked the Cambrian Explosion?
An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally coming into focus
Watch How Gravitational Waves Dance across the Universe
LIGO scientist David Reitze takes us on a 1.3 billion year journey that begins with the violent merger of two black holes in the distant universe. The event produced gravitational waves, tiny ripples in the fabric of space and time, which LIGO detected as they passed Earth on September 14, 2015.
Scientists Discover Children’s Cells Living in Mothers’ Brains
The connection between mother and child is ever deeper than thought
Beyond Resveratrol: The Anti-Aging NAD Fad
Whenever I see my 10-year-old daughter brimming over with so much energy that she jumps up in the middle of supper to run around the table, I think to myself, “those young mitochondria.” Mitochondria are our cells’ energy dynamos.
Special Report
The Discovery of Gravitational Waves
Space
All you need to know about the ripples in spacetime detected by LIGO
Infographic of the Week
Videos
Wounded Soldier to Receive First U.S. Penis Transplant
Doctors at Johns Hopkins Hospital are preparing to perform the first penis transplant in the U.S. The recipient will be a veteran injured in war.
