"Another way climate change will suck". And the results of these two were given as inputs into a third, an algorithm that modelled the economy and showed price fluctuations of barley and beer.
This is not a drill: As climate change worsens, there could be a beer shortage.
Its main ingredient is barley, and because barley is sensitive to extreme drought and heat, climate change could really hurt the beer industry.
Forty-three percent of Americans said beer was their favorite type of alochol in 2016, according to Gallup, with 32 percent saying the same about wine and another 20 percent sticking by hard liquor.
The price of beer could rise sharply this century - and it has nothing to do with trends in craft brewing.
In recent years, the beer sector consumed around 17% of global barley production, but the share varied drastically across major beer-producing countries - from 83% in Brazil to 9% in Australia. In future sweltering years with a double whammy of heat and drought, losses of barley yield can be as much as 17 percent, computer simulations show.
"While the effects on beer may seem modest in comparison to numerous other-some life-threatening-impacts of climate change, there is nonetheless something fundamental in the cross-cultural appreciation of beer", Guan said.
In 2017, US beer sales exceeded $34 billion, according to Brewbound, which cited data from IRI Worldwide. "This is the key message", said professor Dabo Guan of the University of East Anglia, another researcher on the team. Global warming could result in extreme weather, such as floods and droughts, which could jeopardise the lives of millions.
Britain would also get thirsty during a severe barley crunch, with consumption dropping by up to 1.3 billion litres, and the price of a pint doubling.
The future also looks grim four ur European neighbours too, with countries such as Belgium, the Czech Republic and Germany, seeing their total decline in beer production would landing between 27% and 38%.
In China - whose 1.3 billion people collectively down more brew than any other nation - consumption would fall by a staggering 4.3 billion litres in a bad year.
"Current levels of fossil fuel consumption and Carbon dioxide pollution - business as usual - will result in this worst-case scenario, with more weather extremes negatively impacting the world's beer basket", said co-author Nathan Mueller.