Don't tweet if you want TV, London Olympics fans told

Related: Computers

1. Headlines
   1. NASA unveils Grand Challenge to hunt asteroids

      NASA's latest "Grand Challenge" is a biggie: Can you think of better ways to find potentially threatening near-Earth asteroids and do something about those threats?

   2. Facebook may add videos to Instagram, rumors suggest
   3. Last telegraph shuts down in July but some say "Don't. Stop."
   4. Catherine the Great, Tchaikovsky letters returned
   5. Google asks court for OK to publish request data
   6. Hopes raised that 17th-century shipwreck found
   7. Cargo spaceship caught up in fungus flap
2. Multimedia
   1. 
      Video
      Surveillance prevented at least 10 U.S. terror attacks, NSA says
   2. 
      Video
      From the Archives: Sally Ride becomes first American woman in space
   3. 
      Video
      6 tips for protecting your reputation online
   4. 
      Video
      Modern medical woes: Handling tech aches and pains