Video: The Rule of 80/20

'Blood Moon' Captivates Stargazers

NASA shares incredible images of the moon as it glowed during a total lunar eclipse.

Mom Advocates for Vaccines After Losing Daughter to Chicken Pox

Shannon Duffy Peterson's daughter Abby died a few weeks shy of her sixth birthday in 2001.

World's Toughest Job Ad Goes Viral

24 applicants were in for a surprise for a job that listed no breaks and unlimited hours.

Rare 'Blood Moon' on the Rise

NASA scientist Michelle Thaller discusses the total lunar eclipse that has sparked doomsday chatter.

Formerly Conjoined Twins Released From Hospital

Emmitt and Owen Ezell will spend some time at a rehabilitation facility as part of their recovery.

Unvaccinated Girl Blocked From Kindergarten

A Staten Island, N.Y., mom fears chicken pox vaccine could put baby sister at risk.

Twin Babies Cause Mayhem at Dinner Time

Twin brothers, Henry and Graham, have far too much fun at dinner time.

Oscar Pistorius's Valentine From Girlfriend Revealed in Court

Pistorius read a Valentine's Day card that Reeva Steenkamp gave to him before he shot her to death.

7 Babies Found Dead in Utah Home; Woman Arrested

A woman was arrested on six counts of murder after authorities found the bodies of seven infants.

Prosecutor to Pistorius: 'It Was Your Intention to Kill Her'

Gerrie Nel asks the Olympian if he's to blame for the death of girlfriend Reeva Steenkamp.

Prosecution Grills Oscar Pistorius for the Last Time

Defense presents new evidence, including Reeva Steenkamp's last handwritten words to Pistorius.

Doctors Create New Ear for Girl Mauled by Raccoon

Michigan surgeons will carve cartilage from Charlotte Ponce's ribs in the shape of an ear for later implant.

Conjoined Twins Learn to Live Apart

The improbable story of Allison and Amelia Tucker.

Chicken Pox Parties and Pops

Dr. Alanna Levine on the dangers of trying to avoid having kids vaccinated.

Oscar Pistorius Murder Trial: Blade Runner Off the Stand

Defense lawyer Barry Roux questions forensic expert about the night of the shooting.