The week in science: 22-28 May 2015.

This section offers news briefs on science as of May 2015. A new rule proposed by the U.S. Food and Drug Administration requires drug companies that sell veterinary antibiotics to track where their drugs are going. A record energy of 13 teraelectronvolts of protons was achieved by the Large Hadron Collider (LHC) on May 20. An independent investigation found that surgeon Paolo Macchiarini committed scientific misconduct in several papers.