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Google and Apple are backing a way to trace and notify people who may have been infected with Covid-19 using Bluetooth signals from people's phones anonymously.

The Food and Drug Administration on Monday tightened rules for antibody tests, ordering manufacturers to submit emergency use authorization forms and data proving the tests work within 10 days or face possible removal.

The statement from the Secretary of the Senate's office spurred more questions from the Biden campaign about who controls the documents.

"We are committed to supporting all public health efforts to manage the Covid-19 situation," the company said in a statement.

Tim Bray, a senior engineer at Amazon, resigned on Friday over concerns about the company's decision to fire workers who were outspoken critics of its labor practices.

"Wherever you turn, you're going to be offered a face covering, and it's going to be on an ongoing basis for weeks to come to make sure everyone has what they need," de Blasio said.

New York Gov. Andrew Cuomo said Monday that the state is now "on the other side of the mountain" as the daily number of hospitalizations, rate of new infections and deaths related to Covid-19 continue to decline.

The U.S. needs to grow our way out of this crisis, by backing start-ups all around the country that can create jobs and strengthen our economy for the future, Steve Case writes.

Salesforce launched Work.com, which will have resources such as contact tracing, emergency response management and wellness assessments. It will also have a resource center with information from health experts and business leaders.

New Jersey Gov. Phil Murphy announced Monday that the state's schools will stay closed for the remainder of the academic year to continue to curb further spread of the coronavirus.

Cramer warned that the U.S. economy may be too weak to handle another trade spat with China and discouraged Trump from imposing new tariffs.

Home prices have only fallen nationally once since the Great Depression, and that was after the subprime mortgage crisis and the Great Recession. Now, barely eight years after hitting bottom, and after a mighty recovery, prices are predicted to fall nationally again, down 2-3% this year, according to Zillow.

Buffett said Berkshire sold its entire stake in United, American, Southwest and Delta Airlines, worth more than $4 billion on December 31.

A tweet from the Dolphins said Shula "passed away peacefully at his home," NBC News reports.

WHO is holding a briefing on the Covid-19 pandemic.

Buffett praised the Fed for its actions to blunt the effects of the coronavirus but said he worries about the repercussions.

Treasury yields fell on Monday as Washington ramped up its criticism of China over the origin of the coronavirus pandemic.

More than 80 million American households still pay for a form of cable or satellite television. They pay about $20 per month for sports networks that aren't airing live games, but refunds are unlikely.

Tyson Foods on Monday reported that its fiscal second-quarter net income fell 15% from a year earlier, as production disruptions weighed on its results.