An unprecedented boom in hydropower dam construction is underway, primarily in developing countries and emerging economies. While this is expected to double the global electricity production from hydropower, it could reduce the number of our last remaining large free-flowing rivers by about 20 percent and pose a serious threat to freshwater biodiversity.
Despite stringent infection-control measures, the risk of Ebola's spread cannot be entirely eliminated, Doctors Without Borders said today, after one of its doctors caught the dreaded disease while working in Guinea and went to New York City.
A Silicon Valley startup has developed technology to let dispatchers know when a police officer's weapon has been fired. The latest product by Yardarm Technologies would notify dispatchers in real time when an officer's gun is taken out of its holster and when it's fired. It can also track where the gun is located and in what direction it was fired.
China launched an experimental spacecraft today to fly around the moon and back to Earth in preparation for the country's first unmanned return trip to the lunar surface. The eight-day program is a test run for a 2017 mission that aims to have a Chinese spacecraft land on the moon, retrieve samples and return to Earth.
We may think of black holes as swallowing entire stars— or any other object that wanders too close to their immense gravity. But sometimes, a star that is almost captured by a black hole escapes with only a portion of its mass torn off. Astronomers have gotten the closest look yet at what happens when a black hole takes a bite out of a star— and the star lives to tell the tale.
“Here’s some of the stories trending This Week at NASA!” Images from comet’s Mars flyby
A doctor who became New York City's first Ebola patient was praised for getting treatment immediately upon showing symptoms, and health officials stressed that the nation's most populous city need not fear his wide-ranging travel in the days before his illness began.
Scientists hope to unlock the secrets of millions of marine microbes from waters as far apart as Sydney’s Botany Bay and the Amazon River in Brazil, with the help of an international team of volunteers sharing their spare computer capacity to create a research supercomputer.
New achievements in synthetic biology will allow complex cellular recognition reactions to proceed outside of living cells. There could one day be inexpensive, shippable and accurate test kits that use saliva or a drop of blood to identify specific disease or infection— a feat that could be accomplished anywhere in the world, within minutes and without laboratory support, just by using a pocket–sized paper diagnostic tool.
Carbonic acid, the hydrated form of carbon dioxide, is critical to both the health of the atmosphere and the human body. However, because it exists for only a fraction of a second before changing into a mix of hydrogen and bicarbonate ions, carbonic acid has remained an enigma. Now, a study has yielded valuable information about carbonic acid with important implications for both geological and biological concerns.
Rotten eggs, horse urine, formaldehyde, bitter almonds, alcohol, vinegar and a hint of sweet ether. That heady bouquet, according to researchers, is the “perfume” of comet 67P/Churyumov-Gerasimenko.
In individuals living in the Arctic, researchers have discovered a genetic variant that arose thousands of years ago and most likely provided an evolutionary advantage for processing high-fat diets or for surviving in a cold environment. However, the variant also seems to increase the risk of hypoglycemia, or low blood sugar, and infant mortality in today's northern populations.
As California enters its fourth year of severe drought, Southern California water agencies have turned to new pricing structures, expanded rebate programs and implemented other means to encourage their customers to reduce consumption. Some of those policies have greatly reduced per capita consumption, while others have produced mixed results.
Ewing sarcoma (EWS) tumors disappeared and did not return in more than 70 percent of mice treated with combination therapy that included drugs from a family of experimental agents developed to fight breast cancer. A clinical trial using the three-drug combination is expected to open later this year for adolescents and young adults with EWS whose tumors have not disappeared with standard therapy or have returned after treatment.