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ScienceDaily: Plants & Animals News |
Drive-thru type test to detect viral infections in bacteria Posted: 25 Feb 2021 11:37 AM PST The pandemic has made clear the threat that some viruses pose to people. But viruses can also infect life-sustaining bacteria. A research team has developed a test to determine if bacteria are sick, similar to the one used to test humans for COVID-19. |
A-maze-ing pheasants have two ways of navigating Posted: 25 Feb 2021 05:25 AM PST Pheasants fall into two groups in terms of how they find their way around - and the different types prefer slightly different habitats, new research shows. |
Chimpanzees and humans share overlapping territories Posted: 25 Feb 2021 05:25 AM PST Chimpanzees and humans 'overlap' in their use of forests and even villages, new research shows. |
Paleontologists discover new insect group after solving 150-year-old mystery Posted: 25 Feb 2021 05:25 AM PST A research team has solved a 150-year-old-mystery after uncovering how fossil dragonfly relatives have been misclassified due to their striking similarity. The researchers have named a new suborder and 16 new species related to damselflies and dragonflies. |
'Miracle poison' for novel therapeutics Posted: 25 Feb 2021 05:25 AM PST Researchers demonstrate they can engineer botulinum toxin proteins (called proteases) to find new targets with high selectivity, a critical advance toward potential new treatments for everything from neuroregeneration to cytokine storm. |
Scientists achieve breakthrough in culturing corals and sea anemones cells Posted: 25 Feb 2021 05:24 AM PST Researchers have perfected the recipe for keeping sea anemone and coral cells alive in a petri dish for up to 12 days. The new study has important applications to study everything from evolutionary biology to human health. |
Human-caused North Atlantic right whale deaths are being undercounted Posted: 25 Feb 2021 05:24 AM PST Scientists have found that known deaths of critically endangered North Atlantic right whales represent a fraction of the true death toll. This comes as the death of a calf and recent sightings of entangled right whales off the southeastern United States raise alarm. |
New shape-changing 4D materials hold promise for morphodynamic tissue engineering Posted: 25 Feb 2021 05:24 AM PST New hydrogel-based materials that can change shape in response to psychological stimuli, such as water, could be the next generation of materials used to bioengineer tissues and organs, according to a team of researchers. |
Sulfur metabolism may have paved the way for evolution of multicellularity Posted: 24 Feb 2021 11:35 AM PST When the slime mold Dictyostelium discoideum runs out of food, sulfur limitation drives its development from a unicellular to a multicellular organism. Researchers now present the nutrient signaling pathways in this early eukaryote in great detail. Their results show how metabolism may have played a crucial role in the origins of multicellularity. Moreover, the findings also have therapeutic implications for more complex organisms such as humans. Targeting sulfur metabolism in cancer cells may enhance anti-tumor immunity. |
Scientists capture the choreography of a developing brain Posted: 24 Feb 2021 11:35 AM PST The formation of a brain is one of nature's most staggeringly complex accomplishments. The intricate intermingling of neurons and a labyrinth of connections also make it a particularly difficult feat for scientists to study. Now researchers have devised a strategy that allows them to see this previously impenetrable process unfold in a living animal -- the worm Caenorhabditis elegans. |
Mechanism by which exercise strengthens bones and immunity Posted: 24 Feb 2021 11:35 AM PST Scientists have identified the specialized environment, known as a niche, in the bone marrow where new bone and immune cells are produced. The study also shows that movement-induced stimulation is required for the maintenance of this niche, as well as the bone and immune-forming cells that it contains. Together, these findings identify a new way that exercise strengthens bones and immune function. |
Asteroid dust found in crater closes case of dinosaur extinction Posted: 24 Feb 2021 11:35 AM PST Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that slammed into Earth 66 million years ago by finding a key piece of evidence: asteroid dust inside the impact crater. |
Dingo effects on ecosystem visible from space Posted: 23 Feb 2021 12:08 PM PST Satellite images taken over three decades show that keeping dingoes out comes at a price. |
Study sheds light on unique social character of forest elephants Posted: 23 Feb 2021 09:16 AM PST A new study offers rare insights into the unique social character of forest elephants, the least understood of the world's three currently existing elephant species. Limited access to food in the central African forest probably affects why females of this species form smaller family units than other elephants. |
Parasitic plants conspire to keep hosts alive Posted: 23 Feb 2021 08:33 AM PST The plant that encourages kissing at Christmas is in fact a parasite, and new research reveals mistletoe has an unusual feeding strategy. When two mistletoes invade the same tree, they increase photosynthesis to get the nutrients they need, essentially sharing the tree and causing it less harm. |
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