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"I hope it's not that bad, but we should assume it will be until we know otherwise," Gates wrote in an article published Friday in The New England Journal of Medicine.

Bringing Turkey back into Lockheed Martin's F-35 program, following the nation's messy multibillion-dollar deal with Russia, would be a colossal task for the Pentagon's top weapons supplier.

"The fundamentals of the U.S. economy remain strong," Powell said in a mid-day statement.

Oil prices slumped to their lowest in more than a year on Friday.

Goldman Sachs said it sees three rate cuts from the Federal Reserve from March through June.

The Paris Police tweeted that people were exhibiting "unacceptable violence" while defying a ban on protesting near a concert.

The 9th U.S. Circuit Court of Appeals reinstated a block of the administration's policy forcing migrants seeking asylum in the U.S. to wait in Mexico while the cases play out.

"The foundation of war is economics," Tesla and SpaceX CEO Elon Musk said at the Air Warfare Symposium in Orlando, Fla.

Equities have outperformed bonds, bills, currency and inflation around the world over the last 120 years, new research has found, supporting the investment methodology touted by prominent industry names such as Warren Buffett.

"We need to keep this virus slowed down, because health systems around the world, and I mean North and South, are just not ready," a top WHO official said.

WHO officials said they are increasing the risk assessment of the coronavirus to "very high" across the world.

European stocks extended a historic week of losses on Friday as the coronavirus outbreak continued to pummel global markets into correction territory.

Beauty mogul Huda Kattan spoke to CNBC about what she looks for in the people she hires.

The WHO has reaffirmed its warning that the fast-spreading coronavirus could soon reach most, "if not all" countries around the world.

Hundreds of migrants in Turkey started arriving on the borders with Greece and Bulgaria on Friday after a senior Turkish official said Ankara would no longer abide by a 2016 EU deal.

An estimated 20.2 million people are facing severe acute food insecurity across East Africa as swarms of desert locusts ravage crops in an already vulnerable region.

The Australian stock market has provided the highest returns to investors over the last 120 years, topping equities on indexes in the U.S. and Europe, according to research by Credit Suisse.

Countries may consider closing their airspaces in the next few weeks if the coronavirus continues to spread across borders, a market strategist told CNBC.

A potential relaxation of German spending rules is a "false alert," analysts have told CNBC after reports the country's finance chief is willing to load up on new debt.

Ultramarathons are races of more than 26 miles, and they're becoming hugely popular, especially in Asia. CNBC's Uptin Saiidi visits Hong Kong's annual Hong Kong 100 Ultramarathon to meet the athletes putting themselves through the ultimate test of human endurance.