This Science Update looks at the narwhals' paradoxical response to danger.
A listener asks: Can spiders get caught in the webs of other spiders?
In this Science Update, you can hear about how engineers have designed soft robots that can heal themselves from damage.
Ravens, like some great apes, plan ahead.
Snakes cooperate to snag bats on the wing.
Mobile power reactors could turn plastic garbage into gasoline and diesel fuel.
Heat waves and poor air quality go hand and hand.
Gender stereotypes about extreme intelligence take hold in the early school years.
Why you sometimes feel a cold coming on, only to have the symptoms disappear the very next day.
This Science Update attempts to answer this question from a listener: Why do snowflakes appear so similar to each other?
Conducting a census of species using environmental DNA.
Climate change could be leading to food shortages for migrating birds.
Compounds in chicken feathers repel malarial mosquitoes in Africa.
Exercise may promote healthy communication between blood vessels and brain cells.
The wide variety of pollen bees consume exposes them to harmful pesticides.
Ancient minerals are providing new information on the formation of our planet.
Leaving childhood behind can bring uncertainty – and anxiety.
Female house wrens sing to defend their nest sites from intruders.
Small, maneuverable robots based on cockroaches could be deployed in disaster zones to find human survivors.
Engineers are designing more efficient cooling systems inspired by physical processes in nature.