People visit the Globe of Science and Innovation of the European Organization for Nuclear Research (CERN) after the inauguration of the Linac 4 linear accelerator in Meyrin near Geneva, Switzerland, on May 9, 2017. Scientists at the CERN inaugurated Tuesday the linear accelerator Linac 4, the newest accelerator acquisition since the Large Hadron Collider (LHC). Linac 4 is due to feed the CERN accelerator complex with particle beams of higher energy, which will allow the LHC to reach higher luminosity by 2021. (Xinhua/Xu Jinquan)
