Authorities say a 4-year-old girl in Delaware passed out packets of heroin she found in her mother’s backpack to her day care mates, thinking they contained candy.

A CN freight train carrying dangerous goods derailed in central Saskatchewan on Tuesday and caught fire. CN spokesman Jim Feeny says three locomotives were pulling 100 cars when some of them went off the rails.

A new one-day survey suggests that too many hospital patients may be getting antibiotics, or getting the wrong ones. The study by researchers at the Centers for Disease Control found that about half of patients were taking antibiotics and about half of those patients were receiving two or more of the drugs.

At age 29, Brittany Maynard was diagnosed with aggressive terminal brain cancer and given only six months to live. She has since moved to Oregon, which has a death-with-dignity law, and is advocating for more assisted-death legislation in the US.

After two days of debate and opposition at home, the Canadian Parliament adopted the Conservative government’s motion to join airstrikes in Iraq, committing Canada to a more robust role in the fight against the Islamic State, the group known as ISIS or ISIL.

Three researchers who succeeded in inventing efficient blue light-emitting diodes (LEDs) where many companies had failed have won the Nobel Prize in Physics. The Royal Swedish Academy of Sciences on Tuesday announced the award to Isamu Akasaki of Meijo University and Nagoya University, Hiroshi Amano, also of Nagoya University, and Shuji Nakamura of the University of California, Santa Barbara (UCSB).

Sarah Leung has been sentenced to five years in prison for killing her newborn sons in 2009 and 2010. Leung was sentenced in court in Vancouver on Tuesday to 18 months for killing one child and 42 months for killing the other, minus 50 days for time served. Her sentence also requires her to report any time she becomes pregnant …

Yahoo has claimed that several of its servers which came under attack over the weekend were not affected by Shellshock as at first thought, but a similar bug. Yahoo’s chief information security officer, Alex Stamos, revealed that attackers had been attempting to use the Shellshock bug to infect Yahoo’s systems, but had found another way into a few of its …

A black bear cub was found dead in Central Park on Monday morning. The Wall Street Journal reports that the bear was suffering from cuts to its side.

The “Flying Roadster”—AeroMobil 3.0—will be unveiled in Vienna during the Pioneers Festival on October 29. The new unique prototype is going to be physically displayed for the first time to a public audience, and combines the qualities of supercars and light sports aircraft.

Residents in Monroe County are left in shock after a domestic dispute on Friday that began over divorce papers and escalated into gunshots, leaving two women injured and two men dead.