All Stories
- Health & Medicine
Scientists Say: Placebo
In clinical trials, scientists often test a drug or procedure against a placebo — a treatment that has no effect — to find out how well their new treatment works.
- Climate
The world wastes roughly a sixth of the food produced each year
A new United Nations report shows where wastes can be reduced, which would decrease hunger and emissions of climate-warming greenhouse gases.
- Fossils
An ancient hippo-sized reptile may have been a speedy beast
An Anteosaurus was a hefty reptile with a large snout. Its fossil skull hints that it may have moved fast for its time.
- Animals
Science and Indigenous history team up to help spirit bears
When scientists and Indigenous people work together, their efforts can benefit bears and people.
- Animals
Explainer: Black bear or brown bear?
If you see a bear, check size, shape and more to find out what type it is.
- Animals
Changing people’s behavior can make bear life better
Black bears don’t always live life on the wild side. More and more, they live near people. Here’s how people and bears can get along.
- Environment
Urban pollution can pose unseen risks to kids’ immunity and more
A trio of new studies links immune changes and high blood pressure to inhaling bad air.
- Animals
Analyze This: Cows burp less methane after early-life treatment
Calves that receive the 14-week treatment belch less of the greenhouse gas, possibly due to shifts in their gut microbes.
- Genetics
Let’s learn about DNA
DNA is made of two chemical chains twisted around each other. It stores information that allows cells to grow and function.
- Brain
Scientists may have finally found how catnip repels insects
The plant deters mosquitoes and fruit flies by triggering a chemical receptor that, in some animals, senses pain and itch.
- Physics
Scientists Say: Acceleration
Acceleration is a change in velocity. That could mean a change in speed or in direction.
- Animals
Urban gardens create a buffet for bees
City gardens provide a huge amount of nectar and pollen for pollinators, making them an essential conservation tool.
