Experts ask why Black Hawk helicopter may have been flying above allowed altitude before crash
CBSN
The military Black Hawk helicopter that crashed into a passenger plane near Reagan National Airport Wednesday appears to have been flying above the permitted altitude, publicly available flight data analyzed by CBS News shows.
This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's worst air disaster in more than a decade, aviation experts said.
"That's the $64 million question that needs to be answered," said Greg Feith, a former senior air safety investigator with the National Transportation Safety Board, in an interview with CBS News.

The peace and tranquility of Muir Woods, just north of San Francisco – home to 500+ acres of old-growth redwoods – make it just about the last place you'd expect to find a fight brewing. "The fact that they're taking down whole groups of signs about climate change and our nation's history is disappointing, and embarrassing," said retired U.S. Park Ranger Lucy Scott In:

We share our planet with maybe 10 million species of plants, animals, birds, fish, fungi and bugs. And to help identify them, millions of people are using a free phone app. "Currently we have about six million people using the platform every month," said Scott Loarie, the executive director of iNaturalist, a nonprofit.











