What is a ghost gun?
CBSN
The Biden administration unveiled new regulations for "ghost guns" Tuesday in a move that advocates say will help reduce gun violence. The new rules will help law enforcement track and trace these firearms, which authorities say are increasingly involved in crimes.
Ghost guns are unregistered and untraceable homemade weapons that can be made with a 3D printer or assembled from a kit. According to the Bureau of Alcohol, Tobacco, Firearms and Explosives, such weapons are contributing to a rise in gun violence, reported CBS News' Jeff Pegues in February. The weapons can be produced for less than $200, though officials have put the average price at around $500.

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.











