The questions raised by a shooting near the White House

The White House went into lockdown this afternoon after two members of the National Guard were shot in Washington; we'll get the latest from the U.S. capital.A reporter in describes the catastrophic scene in Hong Kong, after a fire rips through high-rise apartment towers, killing at least 40s -- including a firefighter.A huge donation to a Toronto hospital will finance new research that could change the way we screen for cancer; we'll talk to a scientist who hopes that one day, doctors will be able to diagnose early-stage cancer with one simple blood test. The UK's fiscal watchdog accidentally scoops the government by releasing the budget an hour early -- causing chaos on trading floors and catcalls in parliament. A dispute over tennis courts in Palm Beach, Florida, morphed into a tale of hate mail, stolen DNA -- and now, 15 years later, a civil suit decision worth 50 million dollars US.A group of British students are asking for the public's help to find a lost toy bear after he took a tumble from a great height -- specifically, the stratosphere. Where they sent him on a balloon.As It Happens, the Wednesday Edition. Radio that figures sending stuffed toys to space has its plushes and minuses.