Few talked about Northern Ireland during the Brexit referendum. Yet it could now dash Prime Minister Theresa May’s hopes of a deal with the European Union (EU) and threaten 20 years of peace and prosperity in Ireland. A coalition of hardliners within May’s Conservatives and a small party from Northern Ireland that has provided her parliamentary majority since last year’s ...

If there’s an upside to a downturn it’s that short sellers get to make a buck. By borrowing shares, investors can sell what they don’t own. If the price falls, they buy the stock back at a cheaper level and return it to the lender (with interest), pocketing the difference. Assuming the shares fall enough and borrowing costs aren’t too ...

If Sen. Ben Sasse is right — he has not recently been wrong about anything important — the nation’s most-discussed political problem is entangled with the least-understood public health problem. The political problem is furious partisanship. The public health problem is loneliness. Sasse’s new book argues that Americans are richer, more informed and ‘connected’ than ever — and unhappier, more ...