Hypoxic dead zones found in urban streams, not just at the coast
Tue, 11 Dec 2018 14:46:44 EST
A new study finds that hypoxic dead zones occur in nutrient-laden urban streams, not just in coastal waters. The research shows that intense storm flows can erode some stream channels to become a series of pools that trap nutrient-laden runoff. The elevated nutrient levels in the water spur greater consumption of dissolved oxygen by bacteria, causing the pools to become hypoxic until the next storm flushes them out.
Stop sterilizing your dust
Tue, 11 Dec 2018 13:33:14 EST
A new study has found that an antimicrobial chemical called triclosan is abundant in dust -- and linked to changes in its genetic makeup. The result is dust with organisms that could cause an antibiotic-resistant infection.
Warming, sea-ice loss: Arctic Report Card tracks region's environmental changes
Tue, 11 Dec 2018 12:11:07 EST
NOAA's annual report card on the Arctic, released today, shows that the Arctic region experienced the second-warmest air temperatures ever recorded; the second-lowest overall sea-ice coverage; lowest recorded winter ice in the Bering Sea; and earlier plankton blooms due to early melting of sea ice in the Bering Sea.
Degrading permafrost puts Arctic infrastructure at risk by mid-century
Tue, 11 Dec 2018 11:30:30 EST
Seventy percent of the current infrastructure in the Arctic has a high potential to be affected by thawing permafrost in the next 30 years. Even meeting the climate change targets of the Paris Agreement will not substantially reduce those projected impacts, according to a new study.
Perovskite solar cells: cheaper production and high efficiency
Tue, 11 Dec 2018 11:30:20 EST
A team of chemists and physicists is offering a novel approach for the selective layer formation in perovskite solar cells. The molecule assembles itself into a monolayer, which can cover a variety of surfaces and can function as a hole transporting material in a perovskite solar cell.
ICESat-2 reveals profile of ice sheets, sea ice, forests
Tue, 11 Dec 2018 11:30:00 EST
With each pass of the ICESat-2 satellite, the mission is adding to datasets tracking Earth's rapidly changing ice.
Possible connection between cardiovascular disease and living near oil and gas wells
Tue, 11 Dec 2018 11:29:28 EST
Researchers have found a possible connection between the intensity of oil and gas exploration in an area and early indicators of cardiovascular disease among nearby residents.
'Pest-controlling' bats could help save rainforests
Tue, 11 Dec 2018 09:19:26 EST
A new study shows that several species of bats are giving Madagascar's rice farmers a vital pest control service by feasting on plagues of insects. And this, a zoologist believes, can ease the financial pressure on farmers to turn forest into fields.
Sierra snowpack could drop significantly by end of century
Tue, 11 Dec 2018 09:06:39 EST
A future warmer world will almost certainly feature a decline in fresh water from the Sierra Nevada mountain snowpack. Now a new study that analyzed the headwater regions of California's 10 major reservoirs, representing nearly half of the state's surface storage, found they could see on average a 79 percent drop in peak snowpack water volume by 2100.
Switching to a home battery won't help save the world from climate change
Tue, 11 Dec 2018 08:09:29 EST
Home energy storage systems might save you money, but under current policies, they would also often increase carbon emissions.
Online game trains players how to sort waste correctly
Tue, 11 Dec 2018 07:32:55 EST
A simple online game can teach people to more accurately sort waste -- with lasting results, a new study has found. Study participants who played the game received immediate feedback on their sorting choices. The second time they played -- when feedback was no longer provided -- players still improved their average accuracy from 69 per cent to 84 per cent. Even when a week passed between games, players still improved their accuracy.
Bioenergy crops could be as bad for biodiversity as climate change
Mon, 10 Dec 2018 16:51:06 EST
A large scale expansion in bioenergy crop production could be just as detrimental to biodiversity as climate change itself, according to new research.
How will the winds of climate change affect migratory birds?
Mon, 10 Dec 2018 15:18:57 EST
Under future climate scenarios, changing winds may make it harder for North American birds to migrate southward in the autumn, but make it easier for them to come back north in the spring. Researchers came to this conclusion using data from 143 weather radar stations to estimate the altitude, density, and direction birds took during spring and autumn migrations over several years.
Humans may be reversing the climate clock, by 50 million years
Mon, 10 Dec 2018 15:06:14 EST
Our future on Earth may also be our past. Researchers show that humans are reversing a long-term cooling trend tracing back at least 50 million years. And it's taken just two centuries.
Key players in the marine nitrogen cycle can utilize cyanate and urea
Mon, 10 Dec 2018 12:29:03 EST
The ammonia oxidizing archaea, or Thaumarchaeota, are amongst the most abundant marine microorganisms. Yet, we are still discovering which factors allow them to thrive in the ocean: A new publication reveals that marine Thaumarchaeota have a broader metabolism than previously thought.
Unexpected impact of hurricanes on Puerto Rico's watershed
Mon, 10 Dec 2018 11:57:59 EST
Researchers have found unprecedentedly high levels of nitrate, an essential plant nutrient, in streams and watersheds of Puerto Rico for a year after two consecutive major hurricanes in 2017. This high amount of nitrate may have important climate change implications that could harm forest recovery and threaten ecosystems along Puerto Rico's coastline by escalating algal blooms and dead zones.
New look at Puerto Rico post-Hurricane Maria
Mon, 10 Dec 2018 10:53:55 EST
Two new research efforts delve into Hurricane Maria's far-reaching effects on the island's forests and on its residents' energy and electricity access.
Life in Deep Earth totals 15 to 23 billion tons of carbon -- hundreds of times more than humans
Mon, 10 Dec 2018 10:19:09 EST
Barely living 'zombie' bacteria and other forms of life constitute an immense amount of carbon deep within Earth's subsurface -- 245 to 385 times greater than the carbon mass of all humans on the surface, according to Deep Carbon Observatory scientists nearing the end of a 10-year international collaboration to reveal Earth's innermost secrets.
Increasing seal population will not harm largest fish stocks in the Baltic
Mon, 10 Dec 2018 07:25:30 EST
Seals feeding on fish does not decrease fish stocks of Baltic cod, herring and sprat the most -- climate change, nutrient load and fisheries do, shows a new study.
Magnetic reconnection in space: Experiment and satellite sightings
Fri, 07 Dec 2018 14:44:05 EST
New research describes striking similarity of laboratory research findings with observations of the four-satellite Magnetospheric Multiscale Mission that studies magnetic reconnection in space.