Nearing The Tipping Point
Climate crisis pushing Earth to a 'global tipping point,' researchers say
Helen Regan, November 28, 2019 (CNN)
The Earth is heading toward a "global tipping point" if the climate crisis continues on its current path…[Only urgent action can avoid ‘an existential threat to civilization,’ according to a commentary in the journal Nature because growing evidence suggests] irreversible changes to the Earth's environmental systems are already taking place…A global tipping point is a threshold when the planet's systems go beyond the point of no return -- such as the loss of the Amazon rainforest, accelerated melting of ice sheets, and thawing of permafrost…
Such a collapse could lead to ‘hothouse’ conditions that would make some areas on Earth uninhabitable…[The research identified nine areas where] tipping points are already underway…Those include widespread destruction of the Amazon, reduction of Arctic sea ice, large-scale coral reef die-offs, melting of the Greenland and West Antarctic ice sheets, thawing of permafrost, destabilizing of boreal forests -- which contain vast numbers of trees that grow in freezing northern climes -- and a slowdown of ocean circulation…[T]hese events are interconnected and change in one will impact another, causing a worsening ‘cascade’ of crises…” click here for more
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