The latest voter study shows American businessman Donald Trump with a big lead in the Republican Party presidential race.
The United States government said Thursday it would investigate the killing in Zimbabwe of a protected lion.
U.S. lawmakers urged top administration officials Wednesday to provide details about the group that is to enforce a nuclear deal with Iran.
The lawyers for an Israeli spy said Tuesday that U.S. officials have decided to release him in November.
U.S. President Barack Obama ended his East Africa trip Tuesday with a speech to the African Union.
Jeb Bush is the former governor of Florida.
Dr. Ben Carson is the former head of pediatric neurosurgery at Johns Hopkins University in Baltimore, Maryland.
The Republican governor of New Jersey also wants to be president.
Ted Cruz is a senator from Texas.
Carly Fiorina is the only Republican woman so far running for president.