Support WBURThe Interdependence Of Humanity And EarthNovember 08, 2017Marcelo GleiserfacebookEmailStromatolites (deposits built by colonies of cyanobacteria), are seen underwater at high tide in Shark Bay, Western Australia. (UIG via Getty Images)
Stromatolites (deposits built by colonies of cyanobacteria), are seen underwater at high tide in Shark Bay, Western Australia. (UIG via Getty Images)