
Has America's obesity rate plateaued?
Some recent national numbers suggest the obesity rate has plateaued or even declined. Experts are skeptical.

By Sarah Wild published
Heat-loving plants that thrive in California's Death Valley could hold the key to growing crops in a changing climate.

By Tia Ghose published
Two bacteriologists showed that mutations arise spontaneously in bacterial cultures, thereby disproving Jean-Baptiste Lamarck's theory of evolution.

By Harry Baker published
NASA's Perseverance Mars rover recently came across an odd rock, dubbed "Phippsaksla," that is unlike anything else the robot has found on the Red Planet. It turns out that it probably isn't from our neighboring world and likely crashed on Mars instead.

Discover the research changing our understanding of the world

Extraordinary images of our sublime universe

Science questions, answered

Test your knowledge on all things science with our weekly, free crossword puzzle!

Test your knowledge of everything from space to nature

A look at the weird and wonderful species that live on our planet

Unusual case reports from the medical literature

A window onto extraordinary landscapes on Earth

Medical conditions you may never have heard of before

A glimpse into how people lived in the past

Incredible images of our planet from above

Our roundup the biggest discoveries and top science in the news each week

By Lloyd Coombes last updated
Buying guides These are the best beginner-friendly fitness trackers you can buy in every category, from Apple Watch and Garmin Forerunner 165 to Amazfit Active

By Andrew Williams, Anna Gora last updated
Buying Guide These are the best fitness trackers you can buy in every category, from Amazfit Balance and Garmin Fenix 8 to Whoop MG.

By Ben Turner published
Science news this week Nov. 22, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

By Chris Simms published
Circling vultures aren't waiting for you to die, and seeing them should be a welcome sight because of the benefits they bring, experts say.

By Sascha Pare published
Researchers used artificial intelligence to analyze more than 3,000 recordings of African lions and found that the animals have an "intermediate" roar as well as a "full-throated" roar.

By Sophie Berdugo published
Female bonobos routinely form coalitions to stamp out threats from males, but the level of violence in this attack was unprecedented.

By Harry Baker last updated
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!

By Kit Yates published
Opinion How bad-faith arguments sow doubt by weaponizing scientific humility.

By Kit Yates published
Opinion Thousands of scientific papers are retracted every year because of fraudulent activity, with both authors and journals gaming a system to gain academic acclaim through deceit, dishonesty and false representation.

By Larissa G. Capella published
A novel experiment has revealed a phenomenon called the Bohr–Weisskopf effect in a pear-shaped nucleus in a molecule for the first time.

By Tia Ghose published
Mathematician Grigori Perelman solved the Poincaré conjecture, and then rejected the $1 million prize that came with it.

By Mason Wakley published
Scientists have used a novel method to create sustainable, rainbow-colored fibers using bacteria in the lab.
By Tia Ghose published
Over a feverish 10-day period, scientists synthesized and described a new class of carbon molecules, called buckminster fullerenes, after the iconic 20th-century inventor.

By Kimberley Lane last updated
BUYING GUIDE Black Friday has already brought some stellar deals on astro cameras — these models are tried and tested by our experts to help you decide what to invest in.
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