树木腐烂后，枯枝落地，化作自然肥料。bigtitsjapan

　　DECAY is a zombie film made and set at the LHC, by physics PhD students. It will be released free online, under a Creative Commons license. 　　Trapped underground at the world's largest particle accelerator, a group of students make a deadly discovery. 　　This film has not been authorized or endorsed by CERN.