Resurgences of malaria in East Africa are linked to rising temperatures over the past few decades, according to a new analysis. The findings in this week's issue of Nature challenge the results of a study published earlier this year. The authors of the first study found no significant connection between climate change and malaria prevalence in the region. But an international team of scientists now says that global warming and malaria prevalence are indeed linked, and that the original study's conclusions were flawed by its "inappropriate use" of climate data.