[IPS] Ibadan and Mexico City -- African smallholder farmers have no choice but to adapt to climate change: 2020 was the second hottest year on record, while prolonged droughts and explosive floods are directly threatening the livelihoods of millions. By the 2030s, lack of rainfall and rising temperatures could render 40 percent of Africa's maize-growing area unsuitable for climate-vulnerable varieties grown by farmers, while maize remains the preferred and affordable staple food for millions of Africans who survive on less than a few dol