Bernie Sanders, the Democratic presidential hopeful beating Hillary Clinton in the Iowa polls, is the country's longest serving independent Congressman who is calling for a political revolution in America.
The United States marked the 30th anniversary on Thursday of the explosion of the space shuttle Challenger with a pledge to remember lost astronauts as it presses on toward Mars.
Senior US health officials said on Thursday the country's researchers are working on two potential vaccines for the Zika virus, but warned that it will likely take years before they are ready for use.
Prime Minister Justin Trudeau speaks at the commemorative reception on the occasion of the 45th Anniversary of diplomatic relations between Canada and the People's Republic of China on Wednesday, January 27 in Ottawa.
With US Secretary of State John Kerry set to arrive in Beijing, Foreign Ministry spokeswoman Hua Chunying said at a news briefing in the capital on Tuesday that US officials must "play a constructive role ... instead of pointing fingers at others".