Finally, science has discovered why marijuana gives people the munchies. Continue reading
Years into its nearly decade-long mission to survey the asteroid belt, NASA’s Dawn spacecraft traveled through deep space to better understand the dwarf planet Ceres. Now within 52,000 miles of the celestial body, Dawn’s latest images still leave scientists baffled about Ceres’ bright white spots.
A remote island in the Bahamas is home to dozens of species of native and migratory birds, including one that has been on the endangered species list for decades. Scientists would like to see the area known as the Joulter Cays turned into a national park, but not everyone agrees. The NewsHour’s Cat Wise follows a group of researchers as they track and study the piping plover in its winter habitat. Continue reading
PBS NewsHour traveled to the Bahamas recently with a group of scientists to study an endangered shorebird bird called the piping plover. The birds have been on the endangered species list in the United States since the late 1980s, but like many species of migrating birds, scientists didn’t know much about their wintering grounds. Continue reading
Michael McDonnell has climbed Mount Kilimanjaro. He has a physics degree. He’s worked in hazardous environments. His hope is that these qualifications will convince a selection committee that he’s the perfect candidate for the first human voyage to Mars.
So far, it has. He was among the final 100 candidates — 50 men and 50 women — announced for the Mars One mission today, down from an initial candidate pool of 200,000. Continue reading
Prosthetic limbs have long been clunky, acting more as appendages than extensions. But modern technology is now helping amputees rediscover their sense of touch. Miles O’Brien, who lost his own arm in an accident last year, takes a look at new advances in the field. Continue reading
New research published in the journal Science Advances finds that the American Southwest and Great Plains in the 21st century risk the worst drought conditions in more than 1,000 years. By 2050, the U.S. could surpass the “mega-drought” conditions of the 12th and 13th centuries, with severe droughts lasting multiple decades. Continue reading
Improvements in body armor have kept more soldiers alive, but many veterans returning from Iraq or Afghanistan have come back with debilitating injuries. Science correspondent Miles O’Brien, whose left arm was amputated last year, tests out some of the future limbs now in development. Continue reading
An online job forum called Mechanical Turk has created a pool of professional survey-takers who complete hundreds of inquiries a week. For academic researchers, it’s cheap, easy to use and the response flood in fast. But how good is the data being collected? Judy Woodruff learns more from the NewsHour’s Jenny Marder. Continue reading