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Showing posts from June 15, 2016

Einstein 2.0: gravitational waves detected for a second time

By Irene Klotz CAPE CANAVERAL, Fla.,  (Reuters) - The ground-breaking detection of gravitational waves, ripples in space and time postulated by Albert Einstein 100 years ago, that was announced in February was no fluke. The researchers said they detected gravitational waves that washed over Earth after two distant black holes spiraled toward each other and merged into a single, larger abyss 1.4 billion years ago. The first detection of gravitational waves was made in September and announced on Feb. 11.

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Coral 'bright spots' offer clues to protecting threatened reefs

By Alister Doyle OSLO (Reuters) - Some coral reefs are thriving and scientists say they may guide efforts to curb threats such as over-fishing and climate change which are blamed for widespread global declines. A major study identified 15 "bright spots" among more than 2,500 coral reefs in 46 nations, including off Indonesia, the Solomon islands and Kiribati where given local stresses there were far more fish than predicted. Australian Prime Minister Malcolm Turnbull, facing a tight re-election battle, on Monday pledged an A$1 billion ($740 million) fund for the reef, which scientists say is suffering widespread coral bleaching due to climate change.

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Low Vitamin Levels May Be Linked with Migraines in Kids

Kids who frequently get migraines may have lower levels of certain vitamins and antioxidants in their blood, a new study suggests. Researchers found that, of the children and teens in the study who visited a headache clinic for migraine pain, relatively high percentages had mild deficiencies of vitamin D, riboflavin (a B vitamin) and coenzyme Q10 (CoQ10) — a vitamin-like substance that is made in the body and is used to produce energy within cells — compared with kids in the general population. For example, the study found that 42 percent of kids with migraines had riboflavin levels that were at or below the level at which supplementation is recommended.

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Orlando Shooting: Should Curbs on Blood Donations from Gay Men Be Lifted?

Gay and bisexual men who want to donate blood after the shooting in Orlando, Florida, are largely unable to do so, because of a federal rule that prohibits men who are currently sexually active with other men from donating blood. Now, some are suggesting that it's time for the Food and Drug Administration to reconsider the policy. Unfortunately the Gay blood ban is still in place.

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Do Weight-Loss Drugs Work? 5 Medications Compared

People who take some of the newest weight-loss prescription medications on the market typically lose about 5 percent of their body weight over one year, a new review of studies suggests. In the study of overweight and obese people who took one of five different prescription weight-loss drugs designed for long-term use, 40 to 70 percent (depending on which medication they took) achieved a loss of at least5 percent of their body weight. In comparison, 23 percent of adults who were given a placebo lost at least 5 percent of their body weight, according to the findings, published today (June 14) in the journal JAMA.

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From green slime to jet fuel: algae offers airlines a cleaner future

As airlines struggle to find cleaner ways to power jets and with an industry-wide meeting on CO2 emissions just months away, scientists are busy growing algae in vast open tanks at an Airbus site at Ottobrun, near Munich. The European aerospace group is part-financing the Munich Technical University project to grow algae for biofuel and, although commercial production is a long way off, hopes are high. Thomas Brueck, Munich TU's associate professor of industrial biocatalysis, says that the biofuel from algaculture could cater for 3-5 percent of jetfuel needs by about 2050.


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Airplane-Size Seabird Flew Above Antarctica 50 Million Years Ago

A prehistoric seabird that was the size of a small airplane and had a mouthful of sharp teeth once soared over ancient Antarctica, occasionally stopping to snag fish and squid, a new study finds. Researchers found a broken 3.3-inch-long (8.5 centimeters) piece of the bird's humerus (upper arm bone) on Seymour Island in West Antarctica. They dated the bird's humerus to the Lower Eocene, between 53 million and 49 million years ago, said study lead author Marcos Cenizo, the director of the Provincial Museum of Natural History in La Pampa, Argentina.


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Can coffee cause cancer? Only if it's very hot, say WHO scientists

By Kate Kelland LONDON, (Reuters) - There is no conclusive evidence that drinking coffee causes cancer, the World Health Organization's cancer agency will say as it downgrades its warning, but it will also say all "very hot" drinks are probably carcinogenic. The International Agency for Research on Cancer (IARC) had previously rated coffee as "possibly carcinogenic" but has changed its mind. On Wednesday it will say its latest review found "no conclusive evidence for a carcinogenic effect".


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