Guide to 2016 Campaign: Chris Christie
The Republican governor of New Jersey also wants to be president.
Guide to 2016 Campaign: Ben Carson
Dr. Ben Carson is the former head of pediatric neurosurgery at Johns Hopkins University in Baltimore, Maryland.
Guide to 2016 Campaign: Jeb Bush
Jeb Bush is the former governor of Florida.
Guide to 2016 Campaign: Bernie Sanders
Bernie Sanders is a U.S. senator from Vermont.
Guide to 2016 Campaign: Jim Webb
​​Former Virginia Senator Jim Webb is a late addition to the group seeking the Democratic Party nomination for president.
Guide to 2016 Campaign: Martin O’Malley
Martin O’Malley is a former governor of the state of Maryland and a former mayor of Baltimore, a city in Maryland.
Guide to 2016 Campaign: Hillary Clinton
The 2016 election is Hillary Clinton’s second run for the White House.
Guide to 2016 Campaign: Lincoln Chafee
Lincoln Chafee is a former senator and governor of the small state of Rhode Island.
Earth-like Planet Discovered
U.S. scientists said Thursday that they had discovered a planet similar to Earth around a distant sun-like star.
Secretary Carter Makes Unannounced Stop in Iraq
U.S. Defense Secretary Ash Carter made an unannounced visit Thursday to Baghdad, Iraq.