Martin KasteMartin Kaste is a correspondent on NPR's National desk.
The NRA and some concealed-carry activists say the best defense against gun violence is armed "good guys." Here, a man fires his pistol at an indoor range in Aurora, Colo., last summer.
Chris Guthrie, vice president for operations at Canna Pi medical dispensary, inspects a medical marijuana product at his clinic in Seattle on Monday. Marijuana will be legal in Washington state from 12:01 a.m. Thursday.
Anthony Bolante /Reuters /Landov
Online privacy advocates are hopeful the FBI investigation into retired Gen. David Petraeus' personal emails will put a human face on their efforts to update a stalled Internet privacy bill.
John Disney (second from left) looks over the underwater probe used in his company's ocean fertilization project, at a news conference in Vancouver, British Columbia, in October.