BBC: Global supply of a key, plant-based, anti-malaria drug is set to be boosted by a genetic study, scientists say. Researchers have mapped the genes of Artemisia annua to allow selection of high-yield varieties. The study, published in the journal Science, aims to make growing the plant more profitable for farmers. “It’s a major milestone for the development of this crop,” Professor Ian Graham from the University of York in the UK told BBC News. Short …