Climate change is threatening to expose hazardous waste at an abandoned camp thought to be buried forever in the Greenland Ice Sheet, new research out of York University has found.
Camp Century, a United States military base built within the Greenland ice sheet in 1959, doubled as a top-secret site for testing the feasibility of deploying nuclear missiles from the Arctic during the Cold War. When the camp was decommissioned in 1967, its infrastructure and waste were abandoned under the assumption they would be entombed forever by perpetual snowfall.
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Whether growing along the rim of the Grand Canyon or living in the mist with California's coastal redwoods, Douglas fir trees are consistently sensitive to drought conditions that occur throughout the species' range in the United States, according to a study led by a researcher at the University of California, Davis.
The study, published Aug. 8 in the journalProceedings of the National Academy of Sciences, provides direct evidence of the negative impact of water stress on forest ecosystems. It also pinpointed which conditions are causing low growth among Douglas fir trees.
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The decrease in fishery productivity in Lake Tanganyika since the 1950s is a consequence of global warming rather than just overfishing, according to a new report from an international team led by a University of Arizona geoscientist.
The lake was becoming warmer at the same time in the 1800s the abundance of fish began declining, the team found. The lake's algae - fish food - also started decreasing at that time.
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Tropical Storm Javier formed on Aug. 7, 2016 in the Eastern Pacific Ocean off Mexico's western coast. Javier formed partially from the remnants of Hurricane Earl. NASA's Global Precipitation Measurement core satellite found that Javier contained heavy rain. On Aug. 8, Javier triggered hurricane and tropical storm warnings.
Landslides caused by heavy rainfall from the remnants of Hurricane Earl caused the reported deaths of at least 39 people in eastern Mexico. That kind of rainfall was now seen in Tropical Storm Javier.
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Mozuku is a unique Okinawan seaweed. Scientifically known as Cladosiphon okamuranus, this alga is popular in Japanese cuisine, and it has been farmed for more than 35 years. The cultivation of this seaweed is a key element in the economy of Okinawa: in 2006, the Japanese Cabinet Office estimated a 20,000 ton production, with an economic value of billions of Yen. 99% of this seaweed is produced in Okinawa, almost entirely farmed by humans. When in 2015 the production dropped for causes related with the higher temperature of the ocean, political institutions and research centres started to coordinate in order to develop a strategy to preserve this Okinawan treasure.
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Designers of solar cells may soon be setting their sights higher, as a discovery by a team of researchers has revealed a class of materials that could be better at converting sunlight into energy than those currently being used in solar arrays. Their research shows how a material can be used to extract power from a small portion of the sunlight spectrum with a conversion efficiency that is above its theoretical maximum -- a value called the Shockley-Queisser limit. This finding, which could lead to more power-efficient solar cells, was seeded in a near-half-century old discovery by Russian physicist Vladimir M. Fridkin, a visiting professor of physics at Drexel, who is also known as one of the innovators behind the photocopier.
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Manatee advocates are raising concerns about the number of these gentle giants who have been killed in Florida this year. They hope that increased vigilance and other measures will help keep this from being the worst year on record.
The Florida Fish and Wildlife Conservation Commission (FWC) has already counted 71 manatees killed by boats as of July 22. The numbers are already higher than they were for the same period in 2009, which was the deadliest year on record with a total of 97 deaths.
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A new analysis suggests that massive earthquakes on northern sections of the Cascadia Subduction Zone, affecting areas of the Pacific Northwest that are more heavily populated, are somewhat more frequent than has been believed in the past.
The chance of one occurring within the next 50 years is also slightly higher than previously estimated.
The findings, published this week in the journal Marine Geology, are based on data that is far more detailed and comprehensive than anything prior to this. It used measurements from 195 core samples containing submarine landslide deposits caused by subduction zone earthquakes, instead of only about a dozen such samples in past research.
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One of the hottest new materials is a class of porous solids known as metal-organic frameworks, or MOFs. These man-made materials were introduced in the 1990s, and researchers around the world are working on ways to use them as molecular sponges for applications such as hydrogen storage, carbon sequestration, or photovoltaics.
Now, a surprising discovery by scientists in Canada and Russia reveals that MOFs also exist in nature -- albeit in the form of rare minerals found so far only in Siberian coal mines.
The finding, published in the journal Science Advances, "completely changes the normal view of these highly popular materials as solely artificial, 'designer' solids," says senior author Tomislav FrišÄić, an associate professor of chemistry at McGill University in Montreal. "This raises the possibility that there might be other, more abundant, MOF minerals out there."
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