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Here's One More Good Reason Not to Launch a Nuclear War
By Tim Radford
Four U.S. scientists have just introduced one more good reason not to launch a nuclear war. It would not simply guarantee the mutual destruction of the participants. It would also precipitate catastrophic climate change.
And, they argue in the journal Environment Magazine, even a single nuclear missile strike could darken the skies, chill the atmosphere, stop rainfall, ruin harvests and cost a billion lives.
Observers with memories that stretch back to the Cold War and the arms race between the U.S. and the North Atlantic Treaty Organization (NATO) powers on the one hand and the USSR on the other will know something of this already.
In 1983 the astronomer Carl Sagan and colleagues introduced the idea of global annihilation or at least the end of human civilization, in a "nuclear winter" as a consequence of a nuclear weapons exchange.
Years later, as the Soviet Union collapsed and the Russian Federation was born, the same scientists did their calculations again, and reduced the threat to a kind of "nuclear autumn."
Eight nations now possess a nuclear arsenal; the US, Russia and China all have nuclear weapons big enough to precipitate a nuclear calamity, and a ninth, North Korea, now claims to have nuclear capability.
This prompted researchers and political scientists from the University of Nebraska Lincoln to revisit the question, based on a theoretical study of the effect of one hundred 15-kiloton warheads, with the explosive power of 150,000 tons of TNT.
Once exploded, such a strike would incinerate 1,300 square kilometres of a city and its surrounds. This would be quite enough to push five million metric tons of black carbon smoke particles into the stratosphere."
This would be enough to screen solar radiation, reduce the agricultural crop season by between 10 and 40 days a year for at least five years, and lower global temperatures to a point lower than normal for at least 25 years.
In the very short term, this cold snap would be colder than anything for the last 1,000 years. Rainfall would decrease by as much as 20 percent to 80 percent in the Asian monsoon region.
The American southwest and western Australia could become 20 percent to 60 percent drier. South America and southern Africa, too, would see less rain. This global "nuclear drought" and the resulting famines "could kill up to a billion people from starvation.
The most immediate victims would be those in countries that are already poor or food-insecure. And, the scientists warn, should a warhead fall upon a nuclear power facility "the spread of toxic radionuclides and their long-term effects would be greatly magnified."
The drop in precipitation would, they warn, also increase conflict in developing regions, "although global temperature reduction may reduce social violence in the United States and other developed countries."
"We're losing our memory of the Cold War and we're losing our memory of how important it is to get this right," said Tyler White, a political scientist concerned with international security and nuclear policy and one of the authors.
"Even a conflict that doesn't involve the United States can impact us and people around the world."
Reposted with permission from our media associate Climate News Network.
EcoWatch Daily Newsletter
By Jeff Turrentine
First off: Bangkok Wakes to Rain, the intricately wrought, elegantly crafted debut novel by the Thai-American author Pitchaya Sudbanthad, isn't really about climate change. This tale set in the sprawling subtropical Thai capital is ultimately a kind of family saga — although its interconnected characters aren't necessarily linked by a bloodline. What binds them is their relationship to a small parcel of urban land on which has variously stood a Christian mission, an upper-class family house, and a towering condominium. All of the characters have either called this place home or had some other significant connection to it.
Maine Gov. Janet Mills signed a bill into law Thursday banning public schools or universities in the state from using Native American mascots, names or imagery. Mills' action will make Maine the first state in the nation with such a ban once it goes into effect later this year, The Bangor Daily News reported.
Inslee's 'Evergreen Economy Plan' Calls for $9 Trillion Investment in New Green Jobs, Would Help Fossil Fuel Workers Transition
By Julia Conley
A new climate action plan put forth by Democratic presidential candidate Gov. Jay Inslee on Thursday is being praised for highlighting the enormous benefits that would result from a rapid shift in the U.S. to a renewable energy economy that centers on the needs of workers and vulnerable communities.