The Enduring Mysteries of the Narwhal’s Tusk
Why don't we know what narwhals' tusks are for? New footage suggests they use the tusks to stun fish before eating then, but some mysteries remain.
Mountain of Trash: Everest’s Environmental Disaster
We often picture the Himalayas as pristine. In reality, Everest's snows cover empty oxygen tanks, wrappers, cans, and an array of debris left behind by climbers.
The Mysteries of Komodo Dragons
Antibiotics and other medical treatments often come from offbeat sources, but researchers in Virginia have found some promising ...
The Quest for A Faster Marathon
How big a difference does air resistance make when running a marathon? Nike tried to find out recently. A look at the science behind the 2-hour marathon.
The Science of Hot Chili Peppers
Why do spicy foods feel hot? A look at the science behind the world's spiciest hot chili peppers, including the new "Dragon's Breath" variety.
Is Human Noise Stressing Out Protected Wildlife?
A survey in the United States found that in more than half of protected areas human-caused sounds significantly increased background noise levels.
What the White House Needs to Know about Managing “Screen Time”
White House officials, like parents, are learning how limiting screen time can lead to better focus. But what does "screen time" really mean?
Medical Leeches Are Back (Yes, You Read That Right)
Leeches are especially helpful when veins are damaged and unable to properly drain blood from extremities, for example, in recently reattached amputations.
The Gender Politics Behind Why We’re “Mammals”
Linnaeus, who described most plants and animals by their male characteristics, chose to name humans and their relatives after the female breast.
Why Would NASA Want to 3-D Print Chain Mail?
NASA engineers have 3-D printed a new version of chain mail. Why strong, light, heat-resistant materials are so important in space.