iStock/Thinkstock(CHICAGO) -- A gunman killed himself Thursday morning after shooting his boss in the Bank of America building in Chicago's financial district, authorities said.

The victim was the CEO of the company that the shooter worked for, and police said that the shooter was demoted last Friday.

Chicago Police Superintendent Garry McCarthy did not say what company both of the men worked for...

ABC/Rick Rowell(NEW YORK) -- The creator of The Amazing Race and an executive producer of The Lord of the Rings have created The Quest, a new fantasy reality series debuting Thursday on ABC that requires 12 contestants to wear medieval warrior outfits and compete in physical competitions as they navigate a scripted mythology to vie for the title of One True Hero.

The contestants are transported ...

Pixland/Thinkstock(GAZA CITY, Gaza Strip) -- A Palestinian woman gave birth to quadruplets in Gaza Wednesday, a sign of optimism amid ongoing bloodshed in the region that has claimed more than 1,400 lives.

Dr. Bassel Abuwarda posted a photo online showing the babies to Twitter, with a doctor giving a thumbs up to the camera as he stands next to the babies' incubator.

ABC News confirmed that the m...

iStock/Thinkstock(NEW YORK) -- The current Ebola virus outbreak is already the worst on record, with 1,323 infected in three countries across West Africa. Of those infected, 729 have died, including top Ebola doctors in Liberia and Sierra Leone.

While the staggering numbers of the infected and dead are frightening, an outbreak in the U.S. is unlikely to be as devastating as the hardest hit areas...

Target(MINNEAPOLIS) -- Target announced on Thursday it has hired Brian Cornell as its new chairman and CEO.

Cornell, 55, most recently served as the CEO of PepsiCo Americas Foods. Prior to that, he held the title of president and CEO of Sams Club, CEO of Michaels Stores, Inc., and was the executive vice president and chief marketing officer for Safeway.

Cornell replaces John Mulligan, who became...

ABC News(WASHINGTON) -- Things have gotten better for HealthCare.gov, but there could be bumps in this falls open-enrollment period for 2015 coverage, a top CMS official told a House Committee Thursday.

I expect that it wont be perfect, CMS Principal Deputy Administrator Andy Slavitt told the House Energy and Commerce Committees Subcommittee on Oversight and Investigations, at a hearing a...