Whether it's exercise or housework, older Americans who move their bodies regularly may preserve more of their memory and thinking skills, even if they have brain lesions and other signs of dementia.
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An insect-killing bacteria that lives inside a parasitic worm might hold the key to developing a powerful new repellent.
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Creating an exercise habit doesn't mean you have to spend hours sweating on a treadmill. Start small, build up slowly and remember that all movement counts — even vacuuming, if you do it vigorously.
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Americans now have a 1 in 96 chance of dying from an opioid overdose, according to new analysis from the National Safety Council.
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Pregnant women in intensive care with severe cases of the flu have a higher risk of giving birth to babies prematurely. The risk of breathing problems for the baby is also substantially higher.
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A new study shows that when ads made hedonistic marketing claims, such as "exotic" or "delicious," rather than targeting environmental interests, more people were willing to try eating insects.
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Analysis of fossilized dental tartar of a medieval woman buried in a German monastery reveals specks of blue to be lapis lazuli — a luxurious pigment used to create gorgeous illuminated manuscripts.
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A study shows that rating systems for online marketplaces are prone to inflation, because raters feel pressured to leave high scores.
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Scientists have re-engineered photosynthesis, a foundation of life on Earth, creating genetically modified plants that grow faster and bigger. They hope it leads to bigger harvests of food.
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The instruction many students get is not based on the overwhelming scientific evidence about how kids turn spoken sounds into letters and words on a page.
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As a freezing winter drives many of us indoors, some extreme athletes embrace the cold as a great way to burn calories and retrain the immune system while working out. Not so fast, physiologists say.
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Using Medicaid payment data from towns in Alaska that have rejected fluoride in recent years, a new study supports dentists' claims that teeth get worse when the water supply is not fluoridated.
Adorable babies and cute puppies can make us happy. But researchers say their cuteness can be so overwhelming that it unleashes some ugly thoughts.
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Half of the parents of young children in a recent survey said their kids fear going to the doctor. Some admit skipping vaccines and needed appointments. Here's how to nip medical anxiety in the bud.
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A study shows gift-givers and gift-recipients differ on ideas about best gifts. Whereas recipients prefer sentimental gifts, gift-givers tend to opt for presents that match the recipients' interests.
A question about heading soccer balls inspired a series of experiments to understand how the brain changes shape when someone's head takes a hit.
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A growing body of research shows keeping a log of what you are thankful for can lower stress, help you sleep better, and may even reduce the risk of heart disease. But it's not for everyone.
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A study found parachutes were no more effective than backpacks in preventing harm to people jumping from aircraft. The researchers' tongue-in-cheek experiment makes a deeper point about science.
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The European Space Agency's new images show a 51-mile-wide ice-filled depression in the surface of Mars caused by the impact of a meteorite or other celestial body.
(Image credit: Björn Schreiner/ESA/DLR/FU Berlin)