Malaria may have plagued humankind THOUSANDS of years earlier than thought, study finds
New evidence suggests malaria has been plaguing humans much earlier than scientists previously believed. The deadly parasite, which kills more than a million people each year, is transmitted by mosquitoes. The theory is the introduction of irrigation and slash-and-burn agriculture created stagnant pools that were fertile breeding grounds for malaria-carry mosquitos. But genetic mutations in … Read more