Loading...
ScienceDaily: Top Science News |
| Watching the death of a rare giant star Posted: 16 Jun 2022 11:43 AM PDT Extreme supergiant stars known as hypergiants are very rare, with only a few known to exist in the Milky Way. By tracing molecular emissions in the outflows around the red hypergiant star VY Canis Majoris, astronomers obtained the first detailed map of the star's envelope, which sheds light on the mechanisms involved in the final stages of extreme supergiant star. |
| Biochemistry researchers repair and regenerate heart muscle cells Posted: 16 Jun 2022 11:27 AM PDT Researchers are reporting new technology that not only repairs heart muscle cells in mice but also regenerates them following a heart attack, or myocardial infarction as its medically known. |
| Posted: 16 Jun 2022 11:27 AM PDT A new population of polar bears documented on the southeast coast of Greenland use glacier ice to survive despite limited access to sea ice. This small, genetically distinct group of polar bears could be important to the future of the species in a warming world. |
| Engineers create single-step, all-in-one 3D printing method to make robotic materials Posted: 16 Jun 2022 11:27 AM PDT Engineers have developed a new design strategy and 3D printing technique to build robots in one single step. The breakthrough enabled the entire mechanical and electronic systems needed to operate a robot to be manufactured all at once by a new type of 3D printing process for engineered active materials with multiple functions (also known as metamaterials). Once 3D printed, a 'meta-bot' will be capable of propulsion, movement, sensing and decision-making. |
| Once seen as fleeting, a new solar tech proves its lasting power Posted: 16 Jun 2022 11:27 AM PDT Researchers have developed the first perovskite solar cell with a commercially viable lifetime, marking a major milestone for an emerging class of renewable energy technology. The team projects their device can perform above industry standards for around 30 years, far more than the 20 years used as a threshold for viability for solar cells. |
| Martian meteorite upsets planet formation theory Posted: 16 Jun 2022 11:15 AM PDT A new study of an old meteorite contradicts current thinking about how rocky planets like the Earth and Mars acquire volatile elements such as hydrogen, carbon, oxygen, nitrogen and noble gases as they form. |
| 100,000-year-old polar bear genome reveals ancient hybridization with brown bears Posted: 16 Jun 2022 09:16 AM PDT An analysis of ancient DNA from a 100,000-year-old polar bear has revealed that extensive hybridization between polar bears and brown bears occurred during the last warm interglacial period in the Pleistocene, leaving a surprising amount of polar bear ancestry in the genomes of all living brown bears. |
| Posted: 16 Jun 2022 09:15 AM PDT Researchers have identified and reconstructed the first ancient genome of E. coli, using fragments extracted from the gallstone of a 16th century mummy. |
| Olive trees were first domesticated 7,000 years ago, study finds Posted: 16 Jun 2022 07:19 AM PDT A new study has unraveled the earliest evidence for domestication of a fruit tree, researchers report. The researchers analyzed remnants of charcoal from the Chalcolithic site of Tel Zaf in the Jordan Valley and determined that they came from olive trees. Since the olive did not grow naturally in the Jordan Valley, this means that the inhabitants planted the tree intentionally about 7,000 years ago. |
| Origins of the Black Death identified Posted: 15 Jun 2022 08:32 AM PDT The Black Death, the biggest pandemic of our history, was caused by the bacterium Yersinia pestis and lasted in Europe between the years 1346 and 1353. Despite the pandemic's immense demographic and societal impacts, its origins have long been elusive. Now, scientists have obtained and studied ancient Y. pestis genomes that trace the pandemic's origins to Central Asia. |
| The benefits of exercise in a pill? Science is closer to that goal Posted: 15 Jun 2022 08:32 AM PDT Researchers have identified a molecule in the blood that is produced during exercise and can effectively reduce food intake and obesity in mice. |
| You are subscribed to email updates from All Top News -- ScienceDaily. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
Loading...
Loading...
