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ScienceDaily: Plants & Animals News |
| Birds learn to avoid plants that host dangerous insects Posted: 07 Oct 2021 09:20 AM PDT Scientists have discovered that birds know to avoid the plants where toxic animals dwell. |
| Impact of wild meat consumption on greenhouse gas emissions Posted: 07 Oct 2021 09:20 AM PDT Consuming sustainably sourced wild meat instead of domesticated livestock reduces greenhouse gas emissions and retains precious tropical forest systems, which in turn mitigates the effects of climate change. |
| Extinct ground sloth likely ate meat with its veggies Posted: 07 Oct 2021 07:10 AM PDT A new study suggests that Mylodon -- a ground sloth that lived in South America until about 10,000 to 12,000 years ago -- was not a strict vegetarian like all of its living relatives. Based on a chemical analysis of amino acids preserved in sloth hair, the researchers uncovered evidence that this gigantic extinct sloth was an omnivore, at times eating meat or other animal protein in addition to plant matter. |
| A study of skull growth and tooth emergence reveals that timing is everything Posted: 06 Oct 2021 11:34 AM PDT Paleoanthropologists have wondered how and why humans evolved molars that emerge into the mouth at specific ages and why those ages are so delayed compared to living apes. It is the coordination between facial growth and the mechanics of the chewing muscles that determines not just where but when adult molars emerge. This results in molars coming in only when enough of a 'mechanically safe' space is created. Molars that emerge 'ahead of schedule' would do so in a space that, when chewed on, would disrupt the fine-tuned function of the entire chewing apparatus by causing damage to the jaw joint. |
| Neuroscientists roll out first comprehensive atlas of brain cells Posted: 06 Oct 2021 08:25 AM PDT While researchers have discovered numerous cell types in the brain, this atlas of all cell types in one area -- the primary motor cortex -- is the first comprehensive list and a starting point for tracing cellular networks to understand how they control our body and mind and how they are disrupted in mental and physical disorders. |
| Advancing efforts to treat, prevent and cure brain disorders Posted: 06 Oct 2021 08:25 AM PDT It takes billions of cells to make a human brain, and scientists have long struggled to map this complex network of neurons. Now, dozens of research teams around the country have made inroads into creating an atlas of the mouse brain as a first step toward a human brain atlas. The results describe how different cell types are organized and connected throughout the mouse brain. |
| Mapping the mouse brain, and by extension, the human brain too Posted: 06 Oct 2021 08:25 AM PDT Researchers further refine the organization of cells within key regions of the mouse brain and the organization of transcriptomic, epigenomic and regulatory factors that provide these brain cells with function and purpose. |
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