In science news around the world, U.S. President Donald Trump's administration proposes to roll back tough auto mileage standards championed by former President Barack Obama to combat climate change. French President Emmanuel Macron announces a plan to turn his country into a world leader for research and innovation in artificial intelligence, a field dominated by the United States and China. Chilean scientists criticize a study of a 15-centimeter-tall skeleton found in the country's Atacama Desert—which ufologists purported to be extraterrestrial but which the study determined to be a fetus with genetic mutations—because grave robbers likely removed the skeleton from its resting place. Researchers meet in Durham, North Carolina, to discuss how to share data across large cohort studies, sometimes called biobanks, that monitor people for years to study links between genes, lifestyle, and health.