Sickness makes some corals lose their glow.
Disease reduces a coral’s overall fluorescence even before any sign of the infection is visible to the naked eye, a new study finds. An imaging technique that illuminates the change could help with efforts to better monitor coral health, researchers report November 6 in Scientific Reports.
Many corals naturally produce fluorescent...
Very subtle control of artificial limbs by means of a tiny electronic device may become possible.… [The] electronic device … [is] designed to be injected into a muscle through a thick hypodermic needle. A tiny package strapped to the outside of the limb will beam radio waves at the device, which will return them, modified by the electric current produced in the muscle. — ...
Artificial cells made from scratch in the lab could one day offer a more effective, patient-friendly diabetes treatment.
Diabetes, which affects more than 400 million people around the world, is characterized by the loss or dysfunction of insulin-making beta cells in the pancreas. For the first time researchers have created synthetic cells that mimic how natural beta cells sense blood...
Nature has no shortage of animal camouflage tricks. One newly recognized form of deception, used by plant-eating insects called leafhoppers, was thought to have a whole different purpose.
Leafhoppers are found worldwide in temperate and tropical regions. Most of the insects, of which there are about 20,000 described species, produce small quantities of microspheres called brochosomes —...
High-energy particles from outer space have helped uncover an enigmatic void deep inside the Great Pyramid of Giza.
Using high-tech devices typically reserved for particle physics experiments, researchers peered through the thick stone of the largest pyramid in Egypt for traces of cosmic rays and spotted a previously unknown empty space. The mysterious cavity is the first major structure...
Cryo-electron microscopy, an imaging technique that netted three scientists the 2017 Nobel Prize in chemistry, has provided the first atomic-level views of dendrites — whiskery lithium fibers that can spread through lithium-ion batteries, making them short-circuit and catch fire. Until now, scientists couldn’t examine dendrites so closely because the only technique for imaging battery...
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A new insect-inspired tiny robot that can move between air and water is a lightweight.
Weighing the same as about six grains of rice, it is the lightest robot that can fly, swim and launch itself from water, an international team of researchers reports October 25 in Science Robotics. The bot is about 1,000 times lighter than other previously developed aerial-aquatic...
When it comes to some operations, surgical robots may not be worth the extra time or money.
Researchers compared patients who underwent traditional laparoscopy to have a kidney removed — surgery involving several small incisions rather than one large cut — with patients who received robot-assisted laparoscopies. Although the two groups had similar complication rates and hospital stay...
Net to halt runaway airliners
A gigantic emergency arresting gear system, capable of stopping the largest four-engined jet aircraft without discomfort to passengers, is being developed for the French Ministry of Transportation. The system consists of a nylon net … which engages the aircraft for the full width of its wingspan. Net and airplane are brought to a slow stop by energy...
AlphaGo just leveled up.
The latest version of the computer program, dubbed AlphaGo Zero, is the first to master Go, a notoriously complex Chinese board game, without human guidance. Its predecessor — dubbed AlphaGo Lee when it became the first computer program with artificial intelligence, or AI, to defeat a human world champion Go player (SN Online: 3/15/16) — had to study millions of...