Tigers have round pupils, but domestic cats have vertical slits in the center of their eyes. What gives? A census of the shapes of animals' pupils suggests size and way of life each play a big role.
We're not talking steroids here, we're talking about the stuff you can buy at the supermarket. They're not dangerous in themselves. But overuse can signal emotional or physical problems.
Also this week, an in-depth look at Darren Wilson — the Ferguson, Mo., police officer who fatally shot Michael Brown.
A psychologist says there could be a simple way to make calorie-packed foods like French fries or ice cream seem unappealing, even a bit disgusting. Others are less sure.
It has many names: Montezuma's Revenge. Delhi Belly. And there are about as many misconceptions about traveler's diarrhea as there are names for it. We're here to explain what actually will help.
Bagels are getting too big and puffy, throwing off proper ratios to cream cheese and lox. Something must be done.
Male humpback whales create 'songs' together, scientists say. Katy Payne was the first to hear the shifts in pitch and pattern in the collective calls as complex music — haunting, evolving tunes.
Seventy years ago today, an atomic bomb wiped a city off the map. The men who picked the target knew the destruction would be awful, but hoped it could end the war and stop future use of such bombs.
A former steel mill in New Jersey is getting a new lease on life as an indoor farm. AeroFarms is betting it can turn a profit growing greens with lights, using far less water than a traditional farm.
It's easy to spot what Alzheimer's patients have lost — memory, communication skills and more. But a study that sent medical students and dementia patients to art classes opened new vistas for all.
What the secret to long-lasting milk? A complex system of refrigeration called the cold chain. But in some parts of developing countries, the chain doesn't exist, leaving a lot of milk to spoil.
A judge ruled Monday that an Idaho law criminalizing undercover investigations of farms is unconstitutional. Seven states have similar laws, but legal experts say they may not stand much longer.
The ability to store energy could revolutionize the way electricity is made and used. But for many utility companies and regular folks, energy storage is still too costly and difficult.
Heat can turn curly locks into a sleek 'do — and can also damage hair permanently. Engineers at Purdue are figuring out how hot is just hot enough when it comes to wielding that flat iron.
Air conditioning standards are based on the needs of a 155-pound man. Researchers say it's time to admit that women don't need to be chilled as much and crank up the thermostat.
For some unknown reason, the insects that transmit sleeping sickness in sub-Saharan Africa are attracted to the color blue. So scientists think blue flytraps could help wipe out the disease for good.
Scientists are working on ways to train our brains away from deeply held prejudices — including hacking your subconscious while you sleep.
In the past 10 years, the global blueberry crop has tripled. Yet the big, round commercial blueberry is a fairly recent innovation. It was created by breeders exactly 100 years ago, in New Jersey.
Most young children who are extra choosy about what they'll eat eventually outgrow the habit. But research finds that in extreme cases, the pickiness may be linked to depression or social anxiety.
Most U.S. dairy cows are born with horns, but most farms remove them. Animal welfare groups say dehorning is cruel. Instead, they want ranchers to breed more hornless cattle into their herds.