
Our teeth evolved from fish 'body armor' over 460 million years, scientists discover
Teeth are sensitive because they evolved from sensory tissue in both ancient vertebrates and ancient arthropods.
By Harry Baker published
Earth from space A new satellite photo has revealed that the "megaberg," A23a, is beginning to break apart, spawning thousands of smaller ice chunks around the Antarctic island of South Georgia.
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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 TicWatch Atlas.
By Patrick Pester last updated
Artists and scientists have been creating optical illusions for centuries. Here are 35 mind-bending examples that prove you can't always trust what your eyes are telling you.
By Ben Turner published
Pseudomonas aeruginosa is associated with 559,000 yearly deaths worldwide, and many of them come from hospital-acquired infections. A new study suggests it may be thriving in sterile environments by feeding on medical plastics.
By Chris Simms published
Young male capuchins have developed a strange trend of acquiring baby howler monkeys. It doesn't end well for the babies.
By Mindy Weisberger published
Also known as "volcano snails," these gastropods grow a suit of metal-enriched scaly armor and have an enormous heart, which helps them survive in oxygen-poor water in the deep ocean.
By Simon Makin published
We live in an era of constant surveillance. Psychology research shows how this might change how we perceive the world — even unconsciously
By Andrey Feldman published
A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.
By Ben Turner published
The new super-strong copper alloy can be used to build better airplanes and spacecraft.
By Peter Ray Allison published
Exascale computing can process over a quintillion operations every second — enabling supercomputers to perform complex simulations that were previously impossible. But how does it work?