When people think about habitats on Earth, they likely picture forests, oceans or grasslands. Few think to look up. Yet the lower atmosphere, or troposphere, may be the largest habitat on the planet.

US president says ‘important sources’ told him executions are not going ahead. This blog is now closed ...

A new report from the National Transportation Safety Board says years ago, Boeing flagged a potential issue with a bearing ...

F-16 fighter jets will be among the aircraft buzzing the national capital region during a NORAD exercise in the overnight ...

Mark Liu provides a checklist of internet bookmarks he uses during emergencies, including tracking aircraft radar.

Nearly 12 years after Malaysia Airlines flight MH370 vanished with 239 people on board, the search for answers to one of aviation's most haunting riddles resumed Tuesday in the remote southern ...

More than 3,000 flights were canceled or delayed across the United States on Sunday after a winter storm packing ice and snow slammed the Midwest and Great Lakes regions during the busy travel period ...

It’s back! In what has become an annual ritual for millions on Christmas Eve, the North American Aerospace Defense Command, or NORAD, is tracking Santa Claus’s journey from the North Pole to deliver ...

After rounds of flooding in Washington state, another atmospheric river will likely bring more rain to the West Coast during Christmas week. Many places across the country, however, are set to ...

Rain that arrived Friday afternoon in the Bay Area was the first wave in what is expected to be a week of storms. Related Articles Watch: Maps show how California shifted from severe drought to ...

U.S. Southern Command is reviewing an incident in which a JetBlue flight and a U.S. Air Force aircraft almost collided midair near Venezuela on Friday, according to air traffic control audio. In a ...

Woman checks Bernese mountain dog's fur, sees something moving with a tail With the penny going away, what should you do with the ones in your coin jar? 2nd grand jury refuses to indict New York AG ...