Your daily look at late-breaking news, upcoming events and the stories that will be talked about Friday:
1. BREAKTHROUGH IN BOSTON PROBE
The FBI releases photos and video of two suspects wearing backpacks whose images were caught by surveillance cameras.
2. WHAT'S SLOWING SEARCH FOR CAUSE OF TEXAS EXPLOSION
"It's still too hot to get in there," says a spokeswoman for the Bureau of Alcohol, Tobacco and Firearms.
3. FRESH CLAIM OF CHEMICAL WEAPONS IN SYRIA
Britain and France say they have reliable evidence that the Assad regime used chemical weapons near Aleppo, in Homs and possibly in Damascus.
4. HOW GUN CONTROL LAW FAILED
Obama's power and the impassioned pleas of devastated families were no match for the force of gun rights advocates.
5. TRADING SEQUINS FOR JAIL JUMPSUITS
Sen. Roger Wicker says he once hired the man accused of mailing ricin-filled letters as an Elvis impersonator.
6. COMING TO AMERICA: IMMIGRATION LEGISLATION
Lawmakers unveiling a new bill say this time, thanks to broad support, an immigration overhaul can succeed in Congress.
7. LAYOFFS MAY MEAN LAYOVERS
Furloughs of air traffic controller beginning Sunday could result in long flight delays in Atlanta, Chicago, Los Angeles and New York-area airports.
8. 'GOLDILOCKS' PLANETS ARE JUST RIGHT
A NASA telescope has discovered the two best candidates for habitable planets so far: the right size in the right place, one warm, one cool.
9. WHY ICELANDERS MAY BUMP PHONES ON FIRST DATE
Most everyone in Iceland's small population is distantly related. A new app helps determine if a prospective date or mate is too close for genetic comfort.
10. HAVE A SONG IN YOUR HEART? TWEET IT
Twitter's new app allows people to find music they like and tweet songs from iTunes, Spotify and Rdio.