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Mapping international drug use through the world's largest wastewater study

Science Daily - Wed, 10/23/2019 - 08:34
A seven-year project monitoring illicit drug use in 37 countries via wastewater samples shows that cocaine use was skyrocketing in Europe in 2017 and Australia had a serious problem with methamphetamine.

Satellite data used to calculate snow depth in mountain ranges

Science Daily - Tue, 10/22/2019 - 11:11
Bioscience engineers have developed a method to measure the snow depth in all mountain ranges in the Northern Hemisphere using satellites. This technique makes it possible to study areas that cannot be accessed for local measurements, such as the Himalayas.

Catastrophic events carry forests of trees thousands of miles to a burial at sea

Science Daily - Mon, 10/21/2019 - 17:33
While studying sediments in the Bay of Bengal, an international team finds evidence dating back millions of years that catastrophic events likely toppled fresh trees from their mountain homes on a long journey to the deep sea. The discovery may add to models of the Earth's carbon cycle.

Lead pollution from Native Americans attributed to crushing galena for glitter paint

Science Daily - Mon, 10/21/2019 - 13:47
A new study of Native American use of galena increases understanding of how they were using the land and its resources.

Antarctic ice cliffs may not contribute to sea-level rise as much as predicted

Science Daily - Mon, 10/21/2019 - 12:50
Researchers report that in order for a 90-meter ice cliff to collapse entirely, the ice shelves supporting the cliff would have to break apart extremely quickly, within a matter of hours -- a rate of ice loss that has not been observed in the modern record.

Information theory as a forensics tool for investigating climate mysteries

Science Daily - Thu, 10/17/2019 - 06:55
During Earth's last glacial period, temperatures on the planet periodically spiked dramatically and rapidly. A new article suggests that mathematics from information theory could offer a powerful tool for analyzing and understanding these mysterious events.

Inside the fuel cell: Imaging method promises industrial insight

Science Daily - Tue, 10/15/2019 - 10:53
Hydrogen-containing substances are important for many industries, but scientists have struggled to obtain detailed images to understand the element's behavior. Researchers now demonstrate the quantification of hydrogen for different states of water -- i.e., liquid, frozen and supercooled -- for applications to eco-friendly fuel cells.

Population aging to create pockets of climate vulnerability in the US

Science Daily - Fri, 10/11/2019 - 10:22
Population aging projections across the US show a divide between cities and rural areas, which could lead to pockets of vulnerability to climate change.

New study analyzes FEMA-funded home buyout program

Science Daily - Thu, 10/10/2019 - 10:32
An analysis of FEMA's 30-year-old property buyout program offers new insight into the growing debate on managed retreat -- moving people and assets out of flood-prone areas.

Solution to Ice Age ocean chemistry puzzle

Science Daily - Thu, 10/10/2019 - 08:57
New research into the chemistry of the oceans during ice ages is helping to solve a puzzle that has engaged scientists for more than two decades. At issue is how much of the CO2 that entered the ocean during ice ages can be attributed to the 'biological pump', where atmospheric carbon is absorbed by phytoplankton and sequestered to the seafloor as organisms die and sink.

Warm ocean water attacking edges of Antarctica's ice shelves

Science Daily - Wed, 10/09/2019 - 13:29
Upside-down 'rivers' of warm ocean water are eroding the fractured edges of thick, floating Antarctic ice shelves from below, helping to create conditions that lead to ice-shelf breakup and sea-level rise, according to a new study. The findings describe a new process important to the future of Antarctica's ice and the continent's contribution to rising seas. Models and forecasts do not yet account for the newly understood and troubling scenario, which is already underway.

Study recommends special protection of emperor penguins

Science Daily - Tue, 10/08/2019 - 20:21
Researchers recommend additional measures to protect and conserve one of the most iconic Antarctic species -- the emperor penguin (Aptenodyptes forsteri).

Study of past California wildfire activity suggest climate change will worsen future fires

Science Daily - Tue, 10/08/2019 - 09:46
A new study finds that climate has been the dominant controller of wildfire activity in the Sierra Nevada region of the past 1,400 years, suggesting that future climate change is poised to make fires worse.

Early humans evolved in ecosystems unlike any found today

Science Daily - Mon, 10/07/2019 - 14:34
To understand the environmental pressures that shaped human evolution, scientists must reconstruct the ecosystems in which they lived. Because putting together the puzzle of millions-of-years-old ecosystems is a difficult task, many studies draw analogies with present-day African ecosystems, such as the Serengeti. A new study calls into question such approaches and suggests that the vast majority of human evolution occurred in ecosystems unlike any found today.

Early breeding season for some Arctic seabirds due global warming

Science Daily - Mon, 10/07/2019 - 10:33
The breeding season of some seabirds in Arctic regions takes place earlier as a result of the temperature rise caused by climate change, according to a new article.

Disappearing Peruvian glaciers

Science Daily - Mon, 10/07/2019 - 09:04
It is common knowledge that glaciers are melting in most areas across the globe. The speed at which tropical glaciers in the Peruvian Andes are retreating is particularly alarming, however. In the first detailed investigation of all Peruvian mountain ranges, a research team has ascertained a drastic reduction of almost 30 percent in the area covered by glaciers between 2000 and 2016.

The last mammoths died on a remote island

Science Daily - Mon, 10/07/2019 - 07:17
Isolation, extreme weather, and the possible arrival of humans may have killed off the holocene herbivores just 4,000 years ago.

Dust in ice cores leads to new knowledge on the advancement of the ice before the ice age

Science Daily - Fri, 10/04/2019 - 09:56
Working with the ice core ReCap, drilled close to the coast in East Greenland, researchers wondered why the dust particles from the interglacial period -- the warmer period of time between the ice ages -- were several times bigger than the dust particles from the ice age. The research led to the invention of a method able to map the advancement of the glaciers in cold periods and the melting in warmer periods.

Laser precision: NASA flights, satellite align over sea ice

Science Daily - Thu, 10/03/2019 - 10:40
The skies were clear, the winds were low, and the lasers aligned. In April, instruments aboard NASA's Operation IceBridge airborne campaign and the Ice, Cloud and Land Elevation Satellite-2 succeeded in measuring the same Arctic sea ice at the same time, a tricky feat given the shifting sea ice.

Northern forests have lost crucial cold, snowy conditions

Science Daily - Thu, 10/03/2019 - 10:40
Winter conditions are changing more rapidly than any other season and researchers have found clear signs of a decline in frost days, snow covered days and other indicators of winter that could have lasting impacts on ecosystems, water supplies, the economy, tourism and human health.

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