Environment Climate Roundup
A global cooling trend gets reversed by human-induced greenhouse gas emissions.
Nostril Rivalry
Our two nostrils may constantly take turns sending different information to our brain.
Cancer Surgery Robot
A robot may help cancer surgeons confirm the locations of tumors.
Fall Color Differences
A new hypothesis explains why fall colors differ in the U.S. and northern Europe.
Melatonin and Jet Lag
A listener asks: Can melatonin really help decrease jet lag?
Walking in Circles
People really do walk in circles when they get lost – if there's no way for them to get their bearings.
Reading in Dim Light
In this episode our new series Reality Check: Does reading in dim light ruin your eyes?
Micro-needle Patch
A new vaccine skin patch could change how we get our shots.
Public Health Roundup
Public health officials are re-assessing who is most likely to spread the flu in an effort to keep it from reaching the most vulnerable members of …
Early Climate Change
Humans may have affected the Earth's climate thousands of years ago.
Itch Neurons
Scientists have identified nerve cells dedicated to the itch sensation.
Whale Sharks
Marine scientists use digital photographs to identify and help conserve the world's largest sharks.
Asteroid Watch
Citizens can now track nearby asteroids online or via Twitter.
Rooks & Archimedes
Birds called rooks can use a surprisingly ingenious strategy to get a worm.
Mayan Forestry
The early Maya culture practiced forest conservation – and may have paid a heavy price when they stopped.
Regrowing Coral
Researchers and volunteers are regrowing imperiled coral reefs by hand.
Rising Health Costs
Rising health care costs have slowed the growth of companies that subsidize employees' insurance.
Placebo Effect Genes
The placebo effect only works for certain people – could this be genetic?