Twitter says it has suspended more than 125,000 accounts since mid-2015 "for threatening or promoting terrorist acts".

South American health ministers hold an emergency meeting on slowing the spread of the Zika virus, dubbed a "nightmare" by hard-hit Brazil, where it is blamed for brain damage in babies.

Ted Cruz fells long-time Republican frontrunner Donald Trump and Democrat Hillary Clinton was battled into a virtual tie with rival Bernie Sanders on Monday, as Iowans held the inaugural vote of the 2016 White House race.

The World Health Organization's emergency committee will debate whether a Zika virus outbreak suspected of causing a surge in serious birth defects in South America should be considered a global health emergency.

For scores of women in the epicenter of the Zika outbreak in Brazil, the joy of pregnancy has given way to fear.

More than 2,100 pregnant Colombian women are infected with the mosquito-borne Zika virus, the country's national health institute says, as the disease continues its spread across the Americas.

Private individuals will no longer be allowed to advertise guns on Facebook and Instagram, the photo-sharing service owned by Facebook.

Brazilian President Dilma Rousseff vows to "win the war" against the Zika virus, but some experts criticized her government's response and warned the Olympics could fuel the disease's spread.

White House hopeful Donald Trump will not participate in today's Republican debate, bowing out of a nationally

For her lengthy list of achievements in science, a Cuban-American woman is speculated to be the next Albert Einstein, reports Vibe.

A near record blizzard smothers the eastern United States, shutting down New York and Washington in a colossal storm that leaves 15 people dead and affects some 85 million residents.

Maintenance errors by three airmen damaged a nuclear-armed missile in its silo in 2014, the US Air Force says.

A monster blizzard threatening the US East Coast slams into Washington, blanketing the nation's capital in snow as officials urged millions in the storm's path to seek shelter, warning the worst was yet to come.

Shots ring out at a school in western Canada, leaving four people dead and several others critically injured in the nation's worst such shooting in a quarter of a century. "Obviously, this is every parent's worst nightmare," said Prime Minster Justin Trudeau.

US and Iraqi authorities were searching yesterday for three Americans who were kidnapped in Baghdad, the latest group of foreign

Candidates for the Democratic race for the White House have clashed on gun control and healthcare in their liveliest TV debate so far.

Republican frontrunner Donald Trump has attacked Ted Cruz over his birth in Canada, saying it raises questions about his presidential eligibility.

Islamic State jihadists will likely increase the tempo of attacks around the world as they come under increased pressure in Iraq and Syria, a top US general warned Thursday.

Three winning tickets shared a $1.6-billion bonanza in the US Powerball lottery on Wednesday, after millions of people tuned in to see the fate of the world-record jackpot live on TV.

President Barack Obama told Americans nervous about terror and the changing economy that they should not fear the future, in a farewell State of the Union address that drew sharp contrast with Republicans.