This week's host is Prof. Paul Delaney.
1. LHC officially becomes the most powerful accelerator. Both proton beams were powered to 1.18 TeV, the speed of the protons are 0.9997 times the speed of light. Read the story here.,
2. Report from Cassini mission: the eccentricity of Saturn's orbit around the sun may be responsible for the unusually uneven distribution of lakes over the northern and southern polar regions of Titan. Read more here.