Why it's so hard to trace the source of COVID-19, what you need to know about Trump's free speech showdown with Twitter and who was defining tech 25 years ago.
A survey finds a false conspiracy theory about vaccines implanting tracking microchips is popular among Fox News viewers, Republicans and Trump voters.
He also recommends playing online bridge.
A coronavirus tracking program is already testing 300 people a day in Seattle.
The billionaire philanthropist is zeroing in on the pandemic.
The Microsoft co-founder and philanthropist has been outspoken during the pandemic.
The billionaire philanthropist says stopping the funding of the organization is as dangerous as it sounds.
But the Microsoft co-founder and billionaire philanthropist tells CNBC that more needs to be done to combat COVID-19.
He also says leaders need to stop stoking rumors or panic buying.
US President Donald Trump is optimistic that people could be back at work within three weeks. Others think that's a bad idea.
The co-founder leaves to focus on philanthropic efforts.
Technology could help us cure AIDS and understand our biology, Gates says.