Early Earth Had a Hazy, Methane-filled Atmosphere

More than 2.4 billion years ago, Earth’s atmosphere was inhospitable, filled with toxic gases that drove wildly fluctuating surface temperatures. Understanding how today’s world of mild climates and breathable air took shape is a fundamental question in Earth science.New research from the University of Maryland, the University of St. Andrews, NASA’s Jet Propulsion Laboratory, the University of Leeds and the Blue Marble Space Institute of Science suggests that long ago, Earth&rs