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ScienceDaily: Top Science News |
| Posted: 08 Mar 2022 08:56 AM PST New research shows that the oldest ancestors of the group of animals that includes octopuses and vampire squids had not eight but 10 arms. The study, which describes a new species of vampyropod based on a 328-million-year-old fossil that had not been previously described, pushes back the age of the group by nearly 82 million years. |
| Lead exposure in last century shrank IQ scores of half of Americans, study finds Posted: 07 Mar 2022 01:20 PM PST Researchers calculate that exposure to car exhaust from leaded gas during childhood stole a collective 824 million IQ points from over 170 million Americans alive today, more than half of the population of the United States. |
| Researchers uncover how the human brain separates, stores, and retrieves memories Posted: 07 Mar 2022 08:31 AM PST Researchers have identified two types of cells in our brains that are involved in organizing discrete memories based on when they occurred. This finding improves our understanding of how the human brain forms memories and could have implications in memory disorders such as Alzheimer's disease. |
| Posted: 07 Mar 2022 08:31 AM PST A new study asks what drove prehistoric humans to collect and recycle flint tools that had been made, used, and discarded by their predecessors. After examining flint tools from one layer at the 500,000-year-old prehistoric site of Revadim in the south of Israel's Coastal Plain, researchers propose a novel explanation: prehistoric humans, just like us, were collectors by nature and culture. |
| Cellular rejuvenation therapy safely reverses signs of aging in mice Posted: 07 Mar 2022 08:30 AM PST Age may be just a number, but it's a number that often carries unwanted side effects, from brittle bones and weaker muscles to increased risks of cardiovascular disease and cancer. Now, scientists have shown that they can safely and effectively reverse the aging process in middle-aged and elderly mice by partially resetting their cells to more youthful states. |
| Amazon rainforest is losing resilience: New evidence from satellite data analysis Posted: 07 Mar 2022 08:30 AM PST The Amazon rainforest is likely losing resilience, data analysis from high-resolution satellite images suggests. This is due to stress from a combination of logging and burning -- the influence of human-caused climate change is not clearly determinable so far, but will likely matter greatly in the future. For about three quarters of the forest, the ability to recover from perturbation has been decreasing since the early 2000s, which the scientists see as a warning sign. The new evidence is derived from advanced statistical analysis of satellite data of changes in vegetation biomass and productivity. |
| Pig grunts reveal their emotions Posted: 07 Mar 2022 05:23 AM PST We can now decode pigs' emotions. Using thousands of acoustic recordings gathered throughout the lives of pigs, from their births to deaths, an international team of researchers has translated pig grunts into the emotions they appear to express. |
| The future of data storage is double-helical, research indicates Posted: 03 Mar 2022 01:20 PM PST Researchers added seven new letters to DNA's molecular alphabet and developed a precise, letter-perfect sequencing method. These innovations helped transform the double helix into a robust, sustainable data storage platform fit for the Information Age and built to last well beyond the 21st century. |
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