Five Hidden Dangers of ObesityExcess weight can harm health in ways that may come as a surprise
The Science of the GloryOne of the most beautiful phenomena in meteorology has a surprisingly subtle explanation. Its study also helps to predict the role that clouds will play in climate change
Middleweight Black Holes: Clues to the Universe's EvolutionTipping the scales at less than about a million suns in mass, middleweight black holes may hold clues to how their much larger siblings, and galaxies, first formed
Endangered Desert Microbes Protect against Coughs, Sneezes and Red EyeBiologist Jayne Belnap warns of the consequences for the American West if we don't preserve a home for the minute organisms that live in desert topsoil
Can Machines Predict Where Crimes Are about to Happen?In cities across the U.S., data-rich computer technology is telling cops where crimes are about to happen. Crime is down, and the technology is spreading. But does it really work?
How to Make the Food System More Energy EfficientChanges in agriculture, policy and personal behaviors can reduce the energy a nation uses to feed itself and the greenhouse gases it emits
Magnetic Sense Shows Many Animals the Way to GoAnimals' magnetic sense is real. Scientists are zeroing in on how it works
A New Path to LongevityResearchers have uncovered an ancient mechanism that retards aging. Drugs that tweaked it could well postpone cancer, diabetes and other diseases of old age
How Ralph Steinman Raced to Develop a Cancer Vaccine--And Save His LifeWhen Ralph M. Steinman developed pancreatic cancer, he put his own theories about cancer and the immune system to the test. They kept him alive longer than expected—but three days short of learning he had won the Nobel Prize
50, 100 & 150 Years Ago
50, 100 & 150 Years Ago
Why It's Raining Satellites
What is it?
Weighing the Positives
Pond Scum to the Rescue
Why Nobel Laureates Are Getting Older
Why Did So Much High-Profile Junk Fall from Space Last Year?
Scientists Tweak Photosynthesis in Pursuit of a Better Biofuel
Craig Venter Explains How Pond Scum Will Save the World
Here Come the Drones
Plight of the Condors
What Is It?
Your Birdsong Stays on My Mind
The Math behind Screening Tests
Anything Boys Can Do ...
The Little Engine That Could
Photographic Memory: Wearable Cam Could Help Patients Stave Off Effects of Impaired Recall
Devastating Drought Seems Inevitable in American West
From the Editor
The Science of Staying Young
Buying a Better Bulb
How to Buy a Better Lightbulb
Letters to the Editors
Readers Respond to "Bigger Cities Do More with Less" and Other Articles
In the Year 9595
How Siri Makes Computers (and Coders) More Human
The Science Agenda
Read My E-mail? Get a Warrant
The Science of Health