CERN's Large Hadron Collider has been restarted following a long repair period. This week, the particle collider passed Fermilab's Tevatron in beam energy, making it the most powerful accelerator in the world. Scientists at the lab plan to begin collisions using the beams in the days ahead as part of a calibration phase. Plans are for the most powerful collisions that could bring new science to begin next year. We'll get an update on the restart of the collider.
Produced by Annette Heist, Senior Producer