Climate Change Threatens the Future of Beer

In a recent study, scientists have issued a warning that global warming is affecting the taste and availability of beer. The research reveals that the quantity of European hops, which give beer its bitter taste, is diminishing. With hotter, longer, and drier summers expected in the future, the situation is only expected to worsen, potentially leading to a rise in beer prices. The authors of the study have urged farmers to adapt their farming techniques in order to mitigate the effects of climate change on beer production.

Beer is deeply ingrained in European culture, with the UK alone consuming a staggering 8.5 billion pints annually, according to the British Beer and Pub Association. Hops play a vital role in the beer brewing process as the crucial fourth ingredient, alongside water, yeast, and malt. They are added before boiling to add bitterness and can also be added afterwards to alter the overall flavor. The surge in demand for craft beers with distinctive, robust flavors has driven up the use of high-quality hops. However, the study examined the average yield of aroma hops between 1971 and 1994 and between 1995 and 2018, and found a nearly 20% drop in output in key hop-growing regions.

Researchers from the Czech Academy of Sciences (CAS) and Cambridge University attribute this decline to drier conditions, likely resulting from climate change, in recent years. Co-author of the study, Martin Mozny, emphasizes the need for adaptation in order to maintain the profitability of hop growing in affected areas. If necessary measures are not taken, lower production and higher prices for brewers may be imminent.

The cost of beer has already risen by 13% since the onset of the pandemic in 2020, caused by increased energy costs due to inflation and the gas crisis following the invasion of Ukraine. Furthermore, the study revealed that higher and more extreme temperatures have led to a reduction in the alpha bitter acids of hops, which greatly influence beer flavor. Greenhouse gas emissions from human activities have continued to contribute to rising temperatures, despite global efforts to combat climate change. Alarming predictions indicate that the crucial 1.5°C threshold will likely be surpassed within the next five to seven years.

The study further predicts that bitter acids in hops could decrease by up to 31% by 2050. Farmers have already begun implementing practices to enhance yields, such as relocating farms to higher areas with greater rainfall and installing irrigation systems. However, the study authors assert that further investment is necessary to secure the future of beer production. They suggest that the area dedicated to growing aroma hops will need to expand by 20% to compensate for future declines.

The findings of this research, published in the journal Nature Communications, serve as a stark reminder of the far-reaching consequences of climate change. Not only does it threaten the environment and human livelihoods, but it also jeopardizes cherished cultural traditions like the production of beer. As world leaders and individuals alike grapple with the urgent need to curb greenhouse gas emissions, it is crucial to acknowledge and address the impact of global warming on diverse industries and aspects of everyday life.