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כתבות אחרונות מאתר 'Phys'
Phys

How dogs evolved differently across the globe to match human traits‎

We call them "man's best friend," and the evidence supports it. Dogs have been found buried alongside humans in graves dating back 14,000 years. They appear in ancient art from every continent, and they feature in the mythology, religion and folklore of virtually every culture. Archaeological evidence shows they have helped us hunt, protected our homes, hauled our possessions, herded our livestock and provided companionship through the entirety of recorded history.

02:24
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Phys

Controlled cracking technique prints quantum dots into tiny pixels for sharper displays‎

Recent technological advances have enabled the development of increasingly sophisticated, sharper displays for electronic devices. Many modern displays use light-emitting diodes, or LEDs, tiny semiconductor-based components that emit light when an electrical current passes through them.

22:26
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Phys

Hong Kong weather observatory posts record high temperature‎

Hong Kong's weather observatory posted a record high temperature of 36.9°C (98°F) on Sunday as Typhoon Dolphin swept warm air over the city, the meteorological service said.

22:04
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Phys

How to spot the Perseid meteor shower, a summer light show that promises to dazzle‎

The Perseid summer light show is back—and viewing conditions are especially promising for the Northern Hemisphere.

22:04
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Phys

Early snakes explored life underground, on land and at sea‎

Snakes are highly modified lizards, with more than 4,000 living species today. The origin of snakes has long been one of evolutionary biology's most debated questions. Their sparse fossil record has made it hard to pin down what drove the evolution of their limbless body plan.

22:04
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Phys

New catalyst with 75% less platinum promises to reduce the cost of hydrogen fuel cells‎

The high cost of platinum is one of the main barriers to the wider adoption of hydrogen fuel cells. Now, researchers at IMDEA Materials Institute have developed a catalyst that delivers the same performance while using 75% less of this expensive metal. The study, published in Electrochimica Acta, demonstrates a breakthrough made possible by applying controlled mechanical compression to the catalyst. This modifies its atomic-scale structure, enabling it to achieve energy efficiency comparable to that of pure platinum.

21:03
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Phys

Australia has pledged to restore nature. But could we ever bring back lost ecosystems?‎

Nature is not doing well in Australia. Many unique mammals, birds and insects are struggling. Entire ecosystems are collapsing.

20:32
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Phys

Tiny particles defy action-reaction symmetry to stay in motion‎

From schools of fish and flocks of birds to microscopic synthetic particles, many systems in nature and the laboratory consist of individual units or agents that move by consuming energy. These systems are known as active matter because their components continuously use energy to generate motion, either individually or through interactions with their environment.

20:01
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