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- Evidence for decades-old theory to explain the odd behaviors of water
- Ultra-black skin allows some fish to lurk unseen
- Sea turtles' impressive navigation feats rely on surprisingly crude 'map'
- Breakthrough in studying ancient DNA from Doggerland that separates the UK from Europe
- How galaxies die: New insights into the quenching of star formation
- In a first, astronomers watch a black hole's corona disappear, then reappear
- 'Blinking' crystals may convert CO2 into fuels
- A GoPro for beetles: Researchers create a robotic camera backpack for insects
- Giving robots human-like perception of their physical environments
| Evidence for decades-old theory to explain the odd behaviors of water Posted: 16 Jul 2020 11:47 AM PDT A new study provides strong evidence for a controversial theory that at very cold temperatures water can exist in two distinct liquid forms, one being less dense and more structured than the other. Researchers conducted computer simulations of water molecules to discover the critical point at the transition between the two forms. |
| Ultra-black skin allows some fish to lurk unseen Posted: 16 Jul 2020 08:16 AM PDT Scientists report that at least 16 species of deep-sea fish have evolved ultra-black skin that absorbs more than 99.5% of the light that hits them, making them nearly impossible to pick out from the shadows. These fish owe their disappearing act to tiny packets of pigment within their skin cells called melanosomes. The melanosomes of ultra-black fish are differently shaped and arranged on a microscopic level, compared with regular black fish, says a new study. |
| Sea turtles' impressive navigation feats rely on surprisingly crude 'map' Posted: 16 Jul 2020 08:16 AM PDT Since the time of Charles Darwin, scientists have marvelled at sea turtles' impressive ability to make their way -- often over thousands of kilometers -- through the open ocean and back to the very places where they themselves hatched years before. Now, researchers have evidence that the turtles pull off these impressive feats of navigation with only a crude map to guide them on their way. |
| Breakthrough in studying ancient DNA from Doggerland that separates the UK from Europe Posted: 16 Jul 2020 07:16 AM PDT Scientists have studied sedimentary ancient DNA (sedaDNA) from sediment deposits in the southern North Sea, an area which has not previously been linked to a tsunami that occurred 8150 years ago. |
| How galaxies die: New insights into the quenching of star formation Posted: 16 Jul 2020 07:16 AM PDT Astronomers studying galaxy evolution have long struggled to understand what causes star formation to shut down in massive galaxies. Although many theories have been proposed to explain this process, known as ''quenching,'' there is still no consensus on a satisfactory model. Now, an international team of scientists has proposed a new model that successfully explains a wide range of observations about galaxy structure, supermassive black holes, and the quenching of star formation. |
| In a first, astronomers watch a black hole's corona disappear, then reappear Posted: 16 Jul 2020 07:15 AM PDT It seems the universe has an odd sense of humor. While a crown-encrusted virus has run roughshod over the world, another entirely different corona about 100 million light years from Earth has mysteriously disappeared. For the first time, astronomers have watched as a supermassive black hole's own corona, the ultrabright, billion-degree ring of high-energy particles that encircles a black hole's event horizon, was abruptly destroyed. |
| 'Blinking' crystals may convert CO2 into fuels Posted: 16 Jul 2020 07:15 AM PDT Imagine tiny crystals that ''blink'' like fireflies and can convert carbon dioxide, a key cause of climate change, into fuels. A team has created ultra-small titanium dioxide crystals that exhibit unusual ''blinking'' behavior and may help to produce methane and other fuels, according to a new study. The crystals, also known as nanoparticles, stay charged for a long time and could benefit efforts to develop quantum computers. |
| A GoPro for beetles: Researchers create a robotic camera backpack for insects Posted: 15 Jul 2020 11:22 AM PDT Researchers have developed a tiny camera that can ride aboard an insect or an insect-sized robot. |
| Giving robots human-like perception of their physical environments Posted: 15 Jul 2020 10:12 AM PDT New model helps robots understand their environment as humans do. |
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