Winds kick up century old volcanic ash in Alaska
While western U.S. states were suffering from hazy red skies from wildfires, Alaska was dealing with an air quality problem born a century ago.
Environment
Sep 16, 2020
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Page 19 - News tagged with ash
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volcano
Volcanic ash may have a bigger impact on the climate than we thought
When volcanos erupt, these geologic monsters produce tremendous clouds of ash and dust—plumes that can blacken the sky, shut down air traffic and reach heights of roughly 25 miles above Earth's surface.
Earth Sciences
Sep 11, 2020
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August is open season for hunting invasive insects
It's a busy time of year for the Texas A&M Forest Service—many highly destructive pests are emerging in their adult form to reproduce and lay eggs. One such pest on the Forest Service's most wanted list is the emerald ash ...
Ecology
Aug 27, 2020
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Mineral dust ingested with food leaves characteristic wear on herbivore teeth
Mineral dust ingested with food causes distinct signs of wear on the teeth of plant-eating vertebrates, which can differ considerably depending on the type of dust. This is what paleontologists at Johannes Gutenberg University ...
Archaeology
Aug 25, 2020
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200,000 years ago, humans preferred to sleep in beds
Researchers in South Africa's Border Cave, a well-known archeological site perched on a cliff between eSwatini (Swaziland) and KwaZulu-Natal in South Africa, have found evidence that people have been using grass bedding to ...
Archaeology
Aug 14, 2020
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Making the most of a tree epidemic
A large portion of North America's 8.7 billion ash trees are now infested by a beetle called the emerald ash borer.
Ecology
Aug 4, 2020
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Insights into climate change during origin of dinosaurs
The Triassic Period, about 252 to 201 million years ago, was a time of volatile change, particularly during an interval known as the Carnian (about 237 to 227 million years ago). Three dramatic events occurred on Earth: the ...
Earth Sciences
Jul 13, 2020
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How volcanoes explode in the deep sea
Most volcanic eruptions take place unseen at the bottom of the world's oceans. In recent years, oceanography has shown that this submarine volcanism not only deposits lava but also ejects large amounts of volcanic ash.
Earth Sciences
Jun 29, 2020
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Scientists find genes to save ash trees from deadly beetle
An international team of scientists have identified candidate resistance genes that could protect ash trees from the Emerald Ash Borer (EAB), a deadly pest that is expected to kill billions of trees worldwide.
Ecology
May 25, 2020
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Fly ash geopolymer concrete: Significantly enhanced resistance to extreme alkali attack
Fly ash generated by coal-fired power stations is an environmental headache, creating groundwater and air pollution from vast landfills and ash dams. Some of the waste product can be repurposed into geopolymer concrete, such ...
Polymers
May 7, 2020
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