Video
We summarize the week's scientific breakthroughs every Thursday.
- Animals
How cheetah mummies could help bring the species back to Arabia
Arabian cheetah mummies' DNA reveals that the long-lost population could be closely replaced by a cheetah population in northwestern Africa.
- Physics
Queen bumblebees are poor foragers thanks to sparse tongue hair
The density of fine hairs on bumblebees’ tongues determines how much nectar they can collect — and workers put queen bees to shame.
- Physics
Here’s the science behind nuclear weapons testing
Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.
- Science & Society
These scientific discoveries brought us joy in 2025
Amidst a tough year for science, glimmers of joy burst through in revelations from the silly to the sublime.
- Earth
Some of 2025’s scientific discoveries broke records
Longest lightning, the first AI-generated genomes and biggest black hole smashup were among this year’s top science superlatives.
- Animals
Science taught us a few new tricks about our pets in 2025
Are we reading our dog’s moods right? Does TV really comfort them when we’re away? These pet stories were catnip to us this year.
- Animals
These are our favorite animal stories of 2025
From clever cockatoos to vomiting spiders, these cool critters captivated us this year.
- Health & Medicine
He made beer that’s also a vaccine. Now controversy is brewing
An NIH scientist’s maverick approach reveals legal, ethical, moral, scientific and social challenges to developing potentially life-saving vaccines.
- Physics
How to levitate objects sans magic
It’s possible to defy gravity using sound waves, magnets or electricity, but today’s methods can’t hoist heavy items high in the sky.
- Climate
Here are 3 big ideas to combat climate change, with or without COP
As action from the U.N.’s huge COP30 international meeting falls short, smaller groups are banding together to find ways to fight climate change.
- Life
Rats are snatching bats out of the air and eating them
The grisly infrared camera footage records a never-before-seen hunting tactic. It may have implications for bat conservation.
- Animals
Lions have a second roar that no one noticed until now
A machine learning analysis of wild lion audio reveals they have two roar types, not one. This insight might help detect where lions are declining.
