How Do the Chemicals in Sunscreen Protect Our Skin from Damage?
Recognition of the risks posed by UV rays has motivated scientists to study what’s going on in our cells when they’re in the sun—and devise modern ways to ward off that damage
Shine Bright Like a...Penny!
A shiny new chemistry activity
New Concrete Recipes Could Cut Cracks
Recipes for concrete that incorporate by-products from the coal and steel industries, like fly ash and slag, could reduce road salt–related cracking. Christopher Intagliata reports.
Life's Origins by Land or Sea? Debate Gets Hot
Volcanic springs and deep-ocean vents get new evidence
Candy Lightning
A flashy project from Science Buddies
Grizzly Diet Has Several Surprises, Bear Hair Chemistry Shows
Even in salmon season the bears eat lots of plants—and later gorge mostly on salmon brains
Time to Clean...Your Water!
A purely scientific project
Psychedelic Compound in Ecstasy Moves Closer to Approval to Treat PTSD
A promising treatment that uses MDMA could help people suffering with post-traumatic stress disorder
World’s Fastest Movies Capture Molecules in Motion
New movies of drug proteins or photosynthesis in action, shot in millionths of a billionth of a second, show how the molecules work—or fail
U.S. Penalizes Syrian Weapons Scientists after Sarin Attack
Researchers blocked from financial dealings in U.S., but sanctions may have little impact
Finding Fingerprints
A forensic science project
How to Make Tools on Mars, Using Dust
You can't carry everything you need from Earth, so researchers made 3-D–printed shapes with mocked-up Mars dust