All Stories
- Health & Medicine
Vitamin D supplements don’t prevent heart disease or cancer
Vitamin D supplements won’t cut your risk of heart attack or stroke, according to highly anticipated study results.
- Earth
These tiny, crackly bubbles are a new type of volcanic ash
Scientists have identified a new type of volcanic ash made up of millimeter-long spheres with a crackled surface.
- Genetics
Ancient DNA suggests people settled South America in at least 3 waves
Genetic studies of ancient remains are filling in the picture of who the earliest Americans were and how they spread through the Americas long ago.
- Planetary Science
Hints of Oort clouds around other stars may lurk in the universe’s first light
Sifting through the universe’s early light could reveal planetary graveyards orbiting other stars.
- Chemistry
These fragile, futuristic batteries run longer with a little oil
A redesign for batteries that use aluminum and oxygen could help these inexpensive, lightweight power cells last longer.
- Life
How a life-threatening allergic reaction can happen so fast
Cells that act as sentries facilitate quick communication between allergens and anaphylaxis-triggering immune cells, a study in mice finds.
- Life
The number of calories you burn while resting depends on the time of day
This daily cycle of calorie burning is one of the many body processes that follow a biological clock.
- Health & Medicine
A new drug may boost dwindling treatment options for gonorrhea
An antibiotic that targets the bacteria that causes gonorrhea proved effective in treating patients in a clinical trial.
- Neuroscience
Marijuana may change the decision-making part of teen brains
A marijuana-like drug given to male rats during adolescence changed the structure of their brains.
- Archaeology
Like Europe, Borneo hosted Stone Age cave artists
Rock art may have spread from Borneo across Southeast Asia starting 40,000 years ago or more.
- Animals
50 years ago, atomic testing created otter refugees
Nuclear testing on the island of Amchitka caused hundreds of otters to be rehomed 50 years ago. Those hundreds have grown into thousands.
- Physics
Bizarre metals may help unlock mysteries of how Earth’s magnetic field forms
Weyl metals could simulate the dynamo effect that generates the planet’s magnetism, a new study suggests.
