Growing drug resistance and changing climates means that older drugs like chloroquine have become less effective and so new generations of drugs like Lariam have been recommended as frontline preventative treatment.

BBC: The anti-malaria drug dilemma

Now, it's true that climates have been changing throughout Earth's history, but climate scientist Jonathan Overpeck at the University of Arizona at Tucson says this time the change will be fundamentally different from anything that's come before.

NPR: Warming Will Create Micro-Climates, Scientists Say