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Tag: ancient
Ancient bones point to shifting grassland species as climate changes
2016-03-26 16:02:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceDaily: More rainfall during the growing season may have led to one of the most significant changes in Earth's vegetation in the distant past, and similar climate changes could affect the distribution of plants in the future as well, a new study suggests. In a report in Science Advances, an analysis was done of mammoth and bison hair, teeth and bones, along with other data. It concludes that a changing climate -- particularly increasing rainfall and not just atmospheric carbon dioxide -- explains the expansion...
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changes
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ancient
Ancient super-eruptions in Yellowstone Hotspot track 'significantly larger' than expected
2016-03-24 11:00:00| LifeSciencesWorld
[NEWS] Images of the Snake River Plain and research team available at: https://www.dropbox.com/sh/jqfwogc4yy5aje1/AABeZbko4OOkOs17_-oM6_RPa?dl=0 A number of giant super-eruptions between 8 and 12 million years ago that could be larger than the colossal eruptions known to have taken place at Yellowstone have been identified in the United States through research led by the U…
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larger
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significantly
Photosynthesis more ancient than thought, and most living things could do it
2016-03-16 04:02:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceDaily: Photosynthesis is the process by which plants, algae and cyanobacteria use the energy from the Sun to make sugar from water and carbon dioxide, releasing oxygen as a waste product. But a few groups of bacteria carry out a simpler form of photosynthesis that does not produce oxygen, which evolved first. A new study by an Imperial researcher suggests that this more primitive form of photosynthesis evolved in much more ancient bacteria than scientists had imagined, more than 3.5 billion years ago....
Scientists uncover history of ancient viruses as far back as 30 million years ago
2016-03-08 13:00:00| LifeSciencesWorld
[NEWS] Researchers from Boston College, US, have revealed the global spread of an ancient group of retroviruses that affected about 28 of 50 modern mammals' ancestors some 15 to 30 million years ago. Retroviruses are abundant in nature and include human immunodeficiency viruses (HIV-1 and -2) and human T-cell leukemia viruses. The scientists' findings on a specific group of these viruses called ERV-Fc, to be published in the journal eLife, show that they affected a w…
Celestial navigation: navy resurrects ancient craft to thwart hackers
2016-02-29 01:00:00| Naval Technology
Celestial navigation is making a comeback on the US Navys curriculum as the threat of cyber attacks on increasingly high-tech positioning systems becomes ever more of a concern. How is the navy attempting to tackle modern threats with ancient skills
Tags: navigation
ancient
craft
navy
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