This Lego-like figurine escaped from prison Terminator 2 –style thanks to a new composite of gallium and magnetic particles, which liquefies in the presence of a changing magnetic field and moves under the guidance of a permanent magnet. Q. Wang  et al / Matter  2023...

Built from concrete around 126 A.D., the Pantheon in Rome still stands, including its soaring dome (shown). Stephen Knowles Photography/Moment/Getty Images Plus By Carolyn Gramling January 17, 2023 at 9:00 am MIT chemist Admir Masic really hoped his experiment...

Echidnas, spiky egg-laying mammals that live across Australia, blow snot bubbles to keep cool, a new study finds. Nuytsia@Tas/Flickr ( CC BY-NC-SA 2.0 ) By Elise Cutts January 17, 2023 at 7:01 pm Animals cover themselves in all kinds of unsavory fluids to keep cool....

Halteria ciliates (three shown) each ate around 10,000 to 1 million viruses daily in laboratory experiments. In the wild, that number could skyrocket to up to around 1 quadrillion, scientists estimate. Scenics & Science/Alamy Stock Photo By Erin Garcia de Jesús...

These Chinese zodiac animals etched in hydrogels come in many materials, including gold (goat), titanium dioxide (snake) and luminescent nanoparticles (rabbit). The images on the bottom are each a few dozen micrometers wide. The images at the top started that big and...