Firefighters arrive at the scene of an apparent explosion in Manhattan's Chelsea neighborhood, in New York, Saturday, Sept. 17, 2016. A law enforcement official tells The Associated Press that an explosion in the Chelsea neighborhood appears to have come from a construction toolbox in front of a building. The official spoke on condition of anonymity because the person wasn't authorized to speak about an ongoing investigation. Police say 26 people have sustained minor injuries in the explosion on West 23rd Street. (AP Photo/Andres Kudacki)

Feds test bomb remnants of New York blast that injured 29

Authorities said the Manhattan bombing and the blast 11 hours earlier at the site of a 5K race to benefit Marines and sailors in Seaside Park, New Jersey, didn’t appear to be connected, though they weren’t ruling anything out.

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Woman killed in Philadelphia spree shot 7 times

Philadelphia police say a 25-year-old woman was shot seven times and died during a shooting rampage by a man who also ambushed a police officer and injured another officer and three other people before he was shot and killed by police.

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Man who shot at Zimmerman vehicle guilty of attempted murder

Zimmerman testified earlier this week that he was driving to a doctor’s appointment on May 11, 2015, when he noticed he was being pursued by a vehicle whose driver later pulled up, exchanged words and fired one gunshot at him that missed.

FILE - In this Sept. 5, 2013 file photo, an infusion drug to treat cancer is administered to a cancer patient via intravenous drip at Duke Cancer Center in Durham, N.C.   (AP Photo/Gerry Broome, File)

Brain cancer now leading childhood cancer killer

Cancer is the fourth leading cause of death for children overall, accounting for about 1 in 10 childhood deaths in 2014. About a quarter these cancer deaths, or 534, were due to brain cancer.

FILE - In this April 14, 2016 file photo, a drone captures videos and still images of an apartment building in Philadelphia. Federal aviation officials say so many people are registering drones and applying for drone pilot licenses, they wonder if there will eventually be millions of drones crowding the nation's skies.  (AP Photo/Matt Rourke, File)

FAA contemplating whether millions of drones will fill skies

So many people are registering drones and applying for drone pilot licenses that federal aviation officials said Friday they are contemplating the possibility of millions of unmanned aircraft crowding the nation’s skies in the not-too-distant future.

FILE - In this Sept. 3, 2014, file photo, the curved display of a Samsung Galaxy Note Edge is pictured during an 'Unpacked event'  at the IFA, one of the world's largest trade fairs for consumer electronics and electrical home appliances in Berlin, Germany. The 5.6-inch Note Edge is a variant of the Galaxy Note 4, the latest iteration of Samsung’s large-screen stalwart. The Edge’s main display curves around the right edge of the phone to create a side display for notifications and one-tap access to apps, headlines and tasks. (AP Photo/Michael Sohn, File)

Federal order forbids Samsung Galaxy Note 7 use on planes

Passengers also must disable all applications that could inadvertently activate the phone, like an alarm clock; protect the power switch to prevent the phone from being unintentionally turned on; and keep the device in a carry-on baggage or on their person, not in a checked bag.

FILE - In this Monday, April 25, 2016, file photo, a man sits behind the steering wheel of a Tesla Model S electric car on display at the Beijing International Automotive Exhibition in Beijing. Federal officials say the driver of a Tesla S sports car using the vehicle’s “autopilot” automated driving system has been killed in a collision with a truck, the first U.S. self-driving car fatality. The National Highway Traffic Safety Administration said preliminary reports indicate the crash occurred when a tractor-trailer made a left turn in front of the Tesla at a highway intersection. NHTSA said the Tesla driver died due to injuries sustained in the crash, which took place on May 7 in Williston, Fla. (AP Photo/Mark Schiefelbein, File)

Tesla says it’s improving Autopilot by boosting radar

CEO Elon Musk said he thinks that the improvements, which will roll out globally in the next week or two in the form of a software update, probably would have prevented the Tesla Model S crash that killed the driver.