Why aren't Canadian kids more active? A new report card gives them a big fat 'F' for physical activity - the fourth year in a row. So what's going on? We talk to experts - and to kids - tonight.

Actor Dennis Quaid (The Day After Tomorrow, Any Given Sunday, The Parent Trap) shares a personal story of near-tragedy. His twins nearly died of a lethal dose of Heparin. Now, he's trying to highlight the problem of medical mistakes. He'll tell us how - tonight.

And remember that iPhone prototype that was left at a bar, and ended up online? Well, the editor of Gizmodo who exposed all the details had his home computers and servers seized by police. Tonight, a journalist who broke the story gives us the buzz from Silicon Valley.

Connect, 8:00 p.m. ET live.