Did asbestos help life evolve?
来源：未知 作者：风磲硪 时间：2019-03-08 01:02:00
EARTHQUAKES and asbestos may seem an unlikely alliance to help life evolve on early Earth, yet they could have done just that. Sea-floor fissures lined with an asbestos mineral called chrysotile are places where life could have gained a foothold 3.5 billion years ago. To mimic that environment, Naoto Yoshida and Nori Fujiura of the University of Miyazaki in Japan formed a bacterial biofilm on a layer of gum. They added chrysotile minerals, bacterial DNA molecules called plasmids that had genes for antibiotic resistance,