Snowboarder Mike Shea of Castaic is trying to medal again after winning silver at the 2014 Sochi Paralympics.
The penalties also include the first use of new powers that Congress passed last year to punish Moscow for interfering in 2016 U.S. election.
Semi-lost amid the tidal wave of news this week: The House intelligence committee has cleared Donald Trump in its Russia probe. But the road goes ever on.
Organizers have called for demonstrations to last 17 minutes to honor the 17 killed last month. Students are taking up the call in nearly 3,000 protests nationwide.
Hawking was a theoretical physicist who changed how scientists think about gravity. He was 76.
"Rex and I have been talking about this for a long time... we got along quite well but we disagreed on things," Trump said.
An MIT study tracked 126,000 stories and found that false ones were 70 percent more likely to be retweeted than ones that were true. Twitter is asking outside experts to help it deal with the problem.
Before it could publish an issue on race, the magazine first had to look at its own history. "Some of what you find in our archives leaves you speechless," writes editor Susan Goldberg.