The Sciences
The Hunt for Alien Molecules
Astrochemists are discovering many compounds in the cosmos that cannot exist on Earth
Mind
3 Ways to Be a Better Gift Giver
Health
Antibiotic Use in Food Animals Continues to Rise
The Sciences
Astronomers Skeptical about "Planet X" Claims
Sustainability
Sustainability
Virginia Islanders Could Be U.S. First Climate Change Refugees
Mind
Mind
A Nobel Laureate Turning 90 Continues to Churn Out Ideas for New Drugs
Tech
Tech
Hawaii's Telescope Controversy Is the Latest in a Long History of Land-Ownership Battles
The Sciences
The Sciences
Cockroach Caca Contains Chemical Messages Made by Microbes
Tech
Tech
Aviation in 1915: A Weapon of War
Most Popular
Astronomers Skeptical about "Planet X" Claims
Two controversial new studies suggest the discovery of large objects at the outer reaches of the solar system
Nuclear Power Must Make a Comeback for Climate's Sake
James Hansen and other climate scientists argue for more reactors to cut coal consumption
Fast Radio Bursts Mystify Experts—for Now
Astronomers are closing in on the origins of baffling radio flashes from deep space
Why Climate Skeptics Are Wrong
Or why climate skeptics are wrong
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.
Having Sons Can Shorten a Woman's Life Expectancy
Each boy raises the risk of death by 7 percent. They may be energetically more demanding to breast-feed
Special Report
Customized Human Genes: New Promises and Perils
Health
This week, at an international summit in Washington D.C., scientists debated the use of easy new ways to alter human DNA, which could cure diseases but also literally change humanity. Scientific American reports from the front lines of the debate
Editor's Picks
Videos
Hermit Crabs in Hand-Blown Glass Houses
An artist and glass blower crafts homes for hermit crabs. In this video you can see the spiral shape of the animal and how it holds its body when it walks
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