The mushroom cloud produced by the first explosion by the Americans of a hydrogen bomb at Eniwetok Atoll in the South Pacific.
Science and Society Picture Library/Getty Images
By Mahita Gajanan
August 29, 2016

The Earth has entered a new geological epoch defined by human impact, scientists say.

Humanity’s influence on the Earth is so great, an entirely new geological epoch called the Anthropocene should be declared, according to scientists from the Working Group on the Anthropocene, who recommended the change to the International Geological Congress in Cape Town on Monday, the Guardian reported.

The Anthropocene epoch should begin in about 1950, as man-made developments ended the geological time defined by the current epoch, the Holocene, the scientists said. The Holocene encompasses the 12,000 years since the last ice age.

Mid-20th century phenomena, such as carbon dioxide emissions, rising sea levels, the global mass extinction of species and deforestation, have ended the Holocene epoch, the scientists said. The Anthropocene would be defined geologically by the effects of nuclear bomb tests, plastic pollution, concrete and more, according to scientists.

“The significance of the Anthropocene is that it sets a different trajectory for the Earth system, of which we of course are part,” Prof. Jan Zalasiewicz, a geologist at the University of Leicester and chair of the Working Group on the Anthropocene told the Guardian.

The Working Group on the Anthropocene has researched the epoch since 2009.

“If our recommendation is accepted, the Anthropocene will have started just a little before I was born,” Zalasiewicz said. “We have lived most of our lives in something called the Anthropocene and are just realizing the scale and permanence of the change.”

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