{"id":16753,"date":"2022-01-05T13:19:54","date_gmt":"2022-01-05T13:19:54","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=16753"},"modified":"2022-01-05T13:19:54","modified_gmt":"2022-01-05T13:19:54","slug":"study-exposes-hostile-conditions-on-earth-as-life-evolved","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/study-exposes-hostile-conditions-on-earth-as-life-evolved\/16753\/","title":{"rendered":"Study exposes hostile conditions on Earth as life evolved"},"content":{"rendered":"
Researchers have explored the Earths biosphere, UV radiation and Co2 levels using a climate model to analyse the Earth’s planetary habitability as life evolved.<\/h2>\n
During long durations of the past 2.4 billion years, researchers have discovered that the Earth may have been more inhospitable\u202fto life than scientists previously thought, according to\u202fnew\u202fcomputer simulations.<\/p>\n
Climate\u00a0model analysis<\/h3>\n
UV radiation is emitted by the sun and can damage and destroy biologically important molecules such as proteins. Using a state-of-the-art climate model, researchers now believe the level of ultraviolet (UV) radiation reaching the Earth\u2019s surface could have been underestimated, with UV levels being up to ten times higher. This highlights the more hostile conditions on Earth that were present during early life evolution.<\/p>\n
The past 2.4 billion years\u202fis an important chapter in the development of\u202fthe biosphere.\u202fOxygen levels rose from almost zero to significant amounts in the atmosphere, with concentrations fluctuating and eventually reaching modern day concentrations approximately 400 million years ago.<\/p>\n