Where can I see webcam video of transition of Mercury?

Answer 1

Here. It isn't quite live but it is updated every 5 minutes or so. You need to click the refresh button, it won't update automatically. Try to restrain yourself and not click refresh every 30 seconds, you will just use up bandwidth that other people could be using.

Answer 2

It's cloudy here in upstate Ohio or I would have had a picture myself. I'm sure on most science sites or google video's you'll see it soon.