In 2014, during a visit to a remote part of the Yucatán Peninsula in Mexico, ornithologist Dr. Miguel A. Gómez Garza came across parrots with a completely different color pattern from other known species. A study published today in the open-access journal PeerJ names these birds as a new species based on its distinctive shape, color pattern, call and behavior.
Mounting scientific evidence shows that exercise is good not only for our bodies, but for our brains. Yet, exactly why physical activity benefits the brain is not well understood. In a new article published in the journal Trends in Neurosciences, University of Arizona researchers suggest that the link between exercise and the brain is a product of our evolutionary history and our past as hunter-gatherers.
When pesticides and intentional fires fail to eradicate an invasive plant species, declaring biological war may be the best option.
In the year 2100, 2 billion people -- about one-fifth of the world's population -- could become climate change refugees due to rising ocean levels. Those who once lived on coastlines will face displacement and resettlement bottlenecks as they seek habitable places inland, according to Cornell University research.
Mammals possess several lines of defense against microbes. One of them is activated when receptors called Fprs bind to specific molecules that are linked to pathogens. The same receptors are also present in the nose of mice, probably to detect contaminated food or sick conspecifics. Researchers from the University of Geneva describe in the journal PNAS how Fprs have acquired this olfactory role during rodent evolution, moving from the immune system to a neuronal system.
A new study's findings point to potential for tweaking communication between human genes and advancing our ability to treat heart conditions and stimulate regenerative healing.
Over two million years ago, a third of the largest marine animals like sharks, whales, sea birds and sea turtles disappeared. This previously unknown extinction event not only had a consid-erable impact on the earth's historical biodiversity but also on the functioning of ecosystems. This has been demonstrated by researchers at the University of Zurich.
This shows that the expansion of grasslands isn't solely due to drought, but more complex climate factors are at work, both for modern Africans now and ancient Africans in the Pleistocene.
Most organisms share the biosynthetic pathways for making crucial nutrients because it is is dangerous to tinker with them. But now a collaborative team of scientists has caught plants in the process of altering where and how cells make an essential amino acid.
Harvard Medical School researchers have now provided the first insight into the perplexing question of how humans developed their daytime vision.