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Sunday, August 18, 2019

Why robots sink in sand but lizards don’t

Having a light touch can make a big difference in how well animals—and robots—move across surfaces such as snow, sand, and leaves. Scientists studying how running lizards, geckos, crabs and a robot named Sandbot moved across a trackway...

Do these mummy knees belong to Queen Nefertari?

A pair of mummified legs on display in an Italian museum may belong to Egyptian Queen Nefertari—the the pharaoh Ramses II’s favorite wife. Researchers used radiocarbon dating, anthropology, palaeopathology, genetics, and chemical analysis to identify...

Brain readjusts your eyeballs with each blink

Every few seconds, our eyelids automatically shutter and our eyeballs roll back in their sockets. Why don’t we perceive intermittent darkness and light? Because the brain works extra hard to stabilize our vision despite our...

21st eclipse NASA tool

Check out what the today's eclipse will look like in any area of the world As many of you will know, today will be the expected total eclipse in the United States. Thanks to the...

Hot bodies reveal where Pacific bluefin tuna eat

Scientists have developed a new way to measure how and when ocean predators consume prey, and they’ve used it to identify the Pacific bluefin’s favorite hot spots. The findings could help design better conservation policies to help a...

Mermaid’s wineglass gets droopy in acidic ocean

An increasingly acidic ocean is weakening the protective shell of mermaid’s wineglass, a tiny, single-celled alga that lives on shallow seafloors. Reaching a height of just a few inches, Acetabularia acetabulum sports a supportive skeleton...

Sand absorbs high-speed projectiles better than steel

If someone is firing projectiles in your direction, you might be safer hiding behind a sand block rather than a steel wall, new research shows. While sand has long been used in military fortification, limited...

Mars to trade its moon Phobos for a ring

Mars’ largest moon, Phobos, is slowly falling toward the planet, but probably won’t smash into the red planet’s surface. Instead, it likely will be shredded and the pieces strewn about the planet in a...

Nine out of 10 people around the world breathe contaminated air

The WHO estimates that around 7 million people die each year from exposure to fine airborne particles that penetrate deep into the lungs and cardiovascular system, causing diseases such as stroke, heart disease, lung...

Low-key chase lets whale sharks gulp tiny prey

Whale sharks—the largest of the fish—eat truly tiny prey: krill and plankton. To dive to great depths for a good meal, they’ve evolved ways of swimming and diving that use as little energy as...
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