High-precision measurements of Earth's gravitational field by the GOCE satellite produced the most detailed mapping yet of gravity across the Earth's surface.
Japan's meteorological agency has issued a tsunami warning for a wave of up to one meter, following a strong earthquake today near the east coast of Honshu.
A new-found fossil reveals the soft body of a 500-million-year-old undersea creature. Hemichordate Galeaplumosus abilus may provide clues to the evolution of vertebrates like us.
David Monsma of the Arctic Institute describes key findings and recommendations of a new report - The Shared Future - from the Commission on Arctic Climate Change.