Climate at Tipping Point of Irreparable Damage
With nearly every reputable scientist now accepting the reality of human fossil fuel caused global warming, and with the symptoms painfully evident in the natural world, increased scientific attention is now going to ascertaining at what point the damage becomes so severe and long-lasting that the Earth's habitability is put in doubt. There likely exists some “tipping point” beyond which abrupt climate changes and their deleterious and even deadly impacts are irreversible. Given global evidence that current abrupt climate change is on the far extreme of predicted rapidity and severity, in my estimation we are at or closely approaching the point where climate changes will kill billions and make vast swathes of the Earth essentially uninhabitable. Against such a massive threat a major ramping up of international policy responses including investments in energy conservation and renewable energy, and reductions in global emissions primarily through carbon taxes, are a necessity for human survival – much less prosperity.
Debate on Climate Shifts to Issue of Irreparable Change
This “tipping point” scenario has begun to consume many prominent researchers in the United States and abroad, because the answer could determine how drastically countries need to reduce their greenhouse gas emissions in the coming years. While scientists remain uncertain when such a point might occur, many say it is urgent that policymakers cut global carbon dioxide emissions in half over the next 50 years or risk the triggering of changes that would be irreversible.