World food systems ‘pushed to the brink’ by extreme heat, UN warns

Yields begin to decline at temperatures above 30C for most agricultural crops, with damage including weakened cell walls and the production of toxins. The yields of maize in some areas have declined by about 10%. Wheat has fallen by nearly as much, and is projected to decline further as temperatures rise to more than 1.5C above preindustrial levels.

development of a more diverse food system, better equipped to withstand shocks, and a reversal of trends in intensive agriculture that have robbed farms of trees, shade and mixtures of crops

With each new article like this that gets published, it's ever more obvious that biodiverse food forests are the solution.