Author Topic: Ancient ozone holes may have sterilized forests 252 million years ago  (Read 184 times)

0 Members and 1 Guest are viewing this topic.

Offline rangerrebew

  • America defending Veteran
  • TBR Contributor
  • *****
  • Posts: 99,535
  • �It�s easier to fool people than to convince them
Ancient ozone holes may have sterilized forests 252 million years ago
Barren trees could have collapsed food webs, leading to Earth’s greatest mass extinction
By
Carolyn Gramling
7:00am, February 12, 2018
 

Volcano-fueled holes in Earth’s ozone layer 252 million years ago may have repeatedly sterilized large swaths of forest, setting the stage for the world’s largest mass extinction event. Such holes would have allowed ultraviolet-B radiation to blast the planet. Even radiation levels below those predicted for the end of the Permian period damage trees’ abilities to make seeds, researchers report February 7 in Science Advances.

https://www.sciencenews.org/article/ancient-ozone-holes-may-have-sterilized-forests-252-million-years-ago?mode=topic&context=60
« Last Edit: April 16, 2018, 07:21:49 AM by rangerrebew »
“A society does not ever die ‘from natural causes’, but always dies from suicide or murder – and nearly always from the former….”
    ― Arnold Joseph Toynbee’s A Study of History.


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf