Life
- Health & Medicine
Explainer: What is a vaccine?
Vaccines give the body’s natural defense system a boost against infectious disease.
- Animals
Evolving for flight may have changed the shapes of bird eggs
Birds that are strong fliers tend to have stretched-out or asymmetrical eggs. This might reflect how their bodies evolved for flight.
- Life
Scientists Say: Biofilm
When times get tough, some microbes like to stick together. They form a mass stuck to a surface, called a biofilm.
- Animals
Listening to fish love songs can predict their numbers
Gulf corvinas croak for mates while in groups of millions. By listening to their undersea serenades, scientists may be able to estimate how many are out there.
- Agriculture
Bee hotels are open for business
Bee hotels are creating a buzz in conservation and research by offering nesting places for wild bees.
- Animals
DNA tells tale of how cats conquered the world
Ancient DNA study suggests that domesticated cats spread across the ancient world in two waves.
- Brain
Adolescents are brain-dense — and that’s good
Gray matter is densely packed in adolescents, brain researchers now find. This may explain how developing adults cope with decreasing gray matter volume.
- Brain
Tongues ‘taste’ water by sensing sour
Water doesn’t taste like much, but our tongues need to detect it somehow. They may do it by sensing acid, a new study shows.
- Animals
Beware the tap of the narwhal’s tusk
A new video shows narwhals using their tusks to tap fish before eating them. They might be stunning their prey — or just playing with their food.
- Brain
Scientists Say: Amygdala
Named after the Greek word for “almond,” the amygdala helps us process emotions, make decisions and form memories.
- Brain
Brains learning together act the same
When students are all focused on the same thing, their brainwaves look the same, a new study shows.
- Climate
Cool Jobs: Bringing caves’ dark secrets to light
These three cave researchers study caves to learn more about climate, geology and organisms that can survive some of Earth’s most hostile environments.
