Rising CO2 levels mean we’ll get less protein from our grain crops.

Science Daily has one for the “Yeah. Great.” file – research from the Harvard T.H. Chan School of Public Health showing that the rising carbon dioxide levels linked with climate change also means our rice, wheat, and other crops will produce significantly less protein:

Globally, 76% of the population derives most of their daily protein from plants. To estimate their current and future risk of protein deficiency, the researchers combined data from experiments in which crops were exposed to high concentrations of CO2 with global dietary information from the United Nations and measures of income inequality and demographics.

They found that under elevated CO2 concentrations, the protein contents of rice, wheat, barley, and potatoes decreased by 7.6%, 7.8%, 14.1%, and 6.4%, respectively. The results suggested continuing challenges for Sub Saharan Africa, where millions already experience protein deficiency, and growing challenges for South Asian countries, including India, where rice and wheat supply a large portion of daily protein. The researchers found that India may lose 5.3% of protein from a standard diet, putting a predicted 53 million people at new risk of protein deficiency.

Be the first to comment

Leave a Reply