dubbed as the world's biggest scientific experiment, the large hadron collider (LHC) experiment is on right now. the CERN site is almost blocked due to huge traffic and its multimedia gallery link is just not loading as the server is too busy.
u can check the official website here, and for a live experience, visit the NDTV site here. incidentally they are perhaps the only news channel with a reporter covering the event live from the centre of the action.
and do also have a look at 30 days when the world didn't end, here.