Nuclear war between US and Russia would kill billions and lead to global famine

Putin has made several chilling nuclear threats (Picture: EPA; Getty)

A nuclear war between Russia and the US would cause a global famine – wiping out almost two-thirds of the world’s population, warns new research.

More than five billion people would die of hunger following a full-scale conflict, say scientists.

Vladimir Putin’s invasion of Ukraine has brought the threat to the fore. The study is based on computer simulations.

Lead author Professor Lili Xia, of Rutgers University in New Jersey, said: ‘The data tell us one thing. We must prevent a nuclear war from ever happening.’

Models showed firestorms would release soot into the upper atmosphere that would block out the Sun – resulting in global crop failure.

They shed fresh light on the exact impact if ‘Mad Vlad’ reaches for the button. Nine nations, including the UK, currently control more than 13,000 nuclear weapons.

Even a clash between new nuclear states would decimate food production and result in widespread starvation.

The US team calculated soot dispersal from five smaller India-Pakistan wars and a large US-Russia one based on the size of each country’s arsenal.

A climate forecasting tool called the Community Earth System Model enabled affects to be estimated on maize, rice, spring wheat and soybean country-by-country.

A graph showing the average global calorific intake two years after nuclear war (Credit: Nature Food)

The researchers also examined projected changes to livestock pasture and marine fisheries.

Livestock production would nosedive in the aftermath of a nuclear conflict (Credit: Nature Food)

Crop declines would be the most severe in the mid-high latitude nations, including major exporters such as Russia and the US.

It could trigger restrictions and cause severe disruptions in import-dependent countries in Africa and the Middle East.

These would induce a catastrophic disruption of global food markets. Even a seven per cent decline in globalised food production would exceed the largest since records began in 1961.

A nuclear conflict between the US and Russia would have devastating global consequences (Corbis via Getty Images)

Under the largest war scenario, more than 75 per cent of the planet would be starving within two years.

Using crops fed to livestock as human food or reducing waste would have minial benefits.

Prof Xia said: ‘Future work will bring even more granularity to the crop models.

‘For instance, the ozone layer would be destroyed by the heating of the stratosphere, producing more ultraviolet radiation at the surface, and we need to understand that impact on food supplies.’

Climate scientists at Colorado University are creating detailed soot models for specific cities – such as Washington DC.

Inventories of every building will provide a more accurate picture of how much smoke would be produced.

Co-author Prof Alan Robock, also from Rutgers, said researchers already have more than enough information to know a nuclear war of any size would obliterate global food systems – killing billions of people in the process.

He said: ‘If nuclear weapons exist, they can be used, and the world has come close to nuclear war several times.

‘Banning nuclear weapons is the only long-term solution. The five-year-old UN Treaty on the Prohibition of Nuclear Weapons has been ratified by 66 nations, but none of the nine nuclear states.

‘Our work makes clear that it is time for those nine states to listen to science and the rest of the world and sign this treaty.’

The study is in Nature Food. Earlier this year another US team found nuclear war between the US and Russia would trigger a ‘Little Ice Age’ lasting thousands of years.

Previous research has shown nuclear war would trigger a ‘Little Ice Age’ (Credits: Getty Images)

In the first month following detonation, average global temperatures would plunge by about 13 degrees Fahrenheit – more than during the most recent Ice Age. That ended 11,700 years ago – killing off the woolly mammoth.

Once the smoke is released into the upper atmosphere it spreads globally – and affects everyone.

Marine ecosystems would also be devastated both initially and in a new ocean state – resulting in long-term gimpacts to fisheries and other services.

The world’s current population stands at around eight billion.


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