Hundreds of massive seafloor craters are leaking methane

June 2, 2017 by  
Filed under Green

Comments Off on Hundreds of massive seafloor craters are leaking methane

12,000 years ago the Barents Sea was covered with ice . Warming caused ice sheets to recede and a lot of methane was released, leading to blowouts that left the Arctic Sea floor scarred with hundreds of craters . Researchers in Norway recently found these craters, which offer a warning for the future of our world wracked by climate change – and are still leaking methane. The newly-found seafloor craters date all the way back to the end of our planet’s last Ice Age , when they were caused by explosive blowouts. Many of the Arctic Sea floor craters are huge, measuring around 0.6 miles wide. And many are not inactive, but continue to seep methane. Related: 7,000 methane gas bubbles in Siberia on the verge of exploding The ice on the Barents Sea for a time kept methane from hydrocarbon reservoirs from escaping. According to Gizmodo, the methane was stored as a hydrate in sediment, which led to pressurized conditions. Study lead author Karin Marie Andreassen of the Center for Arctic Gas Hydrate, Climate, and Environment (CAGE) explained it this way: “As the ice sheet rapidly retreated, the hydrates concentrated in mounds, and eventually started to melt, expand, and cause over-pressure. The principle is the same as in a pressure cooker: if you do not control the release of the pressure, it will continue to build up until there is a disaster in your kitchen. These mounds were over-pressured for thousands of years, and then the lid came off.” Her team found more than 100 craters between 980 and 3,280 feet wide, and hundreds more smaller craters under 980 feet wide. The also found 600 methane flares, where the gas is spewing out near the craters. Methane concerns scientists because it is 30 times more potent than carbon dioxide when it comes to trapping heat in our atmosphere. And similar geological processes as the ones that led to these Arctic Sea floor craters are still in motion around the world, so scientists think climate change could lead to more methane explosions. The journal Science published the research online this week. 10 CAGE scientists collaborated on the study with two researchers from the Norwegian Petroleum Directorate . Via Gizmodo Images via Andreia Plaza Faverola/CAGE and K. Andreassen/CAGE

Go here to see the original:
Hundreds of massive seafloor craters are leaking methane

Could coffee help fight cancer?

June 2, 2017 by  
Filed under Eco, Green

Comments Off on Could coffee help fight cancer?

Your morning joe could give you more than just a buzz; it might even stave off the most common form of primary liver cancer. In a new study published this week, researchers from the University of Southampton and the University of Edinburgh claimed that people who consume at least a cup or more of caffeinated coffee a day have a 20 percent lower risk of developing hepatocellular cancer than those who abstain. Heavy coffee drinkers can assert an even bigger advantage: imbibing up to five cups a day can reduce the same risk by half, scientists said. Even decaf was found to have a protective effect, if “smaller and less certain than for caffeinated coffee.” Despite coffee’s potential as a lifestyle intervention in chronic liver disease, Southampton’s Oliver Kennedy, the study’s lead author, advises some modicum of caution. Related: Edible Scoff-ee cups let you have your coffee and eat it too “We’re not suggesting that everyone should start drinking five cups of coffee a day though,” he said in a statement. “There needs to be more investigation into the potential harms of high coffee-caffeine intake, and there is evidence it should be avoided in certain groups such as pregnant women.” To reach their conclusion, the scientists analyzed data from 26 studies involving more than 2.25 million participants. Hepatocellular cancer, the second leading cause of cancer death globally, particularly in China and Southeast Asia, usually develops in people who already suffer from chronic liver disease. Experts suggest that we could see as many as 1.2 million cases by 2030. Related: Trouble brewing for coffee – half the land it needs to grow could be unfit by 2050 Previous studies have shown that increased coffee consumption can protect against liver cirrhosis , which can develop from partaking in too much alcohol. “The next step now is for researchers to investigate the effectiveness, through randomized trials, of increased coffee consumption for those at risk of liver cancer,” Kennedy said. + University of Southampton Via the Guardian Photos by Unsplash

See the original post here:
Could coffee help fight cancer?

Bad Behavior has blocked 2755 access attempts in the last 7 days.