Rumbles on Mars Raise Hopes of Underground Magma Flows
Podcast hosted by SUSAN VALOT Story by ROBIN GEORGE ANDREWS
Small and cold, Mars has long been considered a dead planet. But a series of recent discoveries has forced scientists to rethink how recently its insides stopped churning — if they ever stopped at all.
Stellar S'mores, Anyone? Data from the Solar Orbiter hint that mini-solar flares, or "campfires," could supply the missing energy needed to heat the sun's corona, Daniel Clery reports for Science Magazine. By studying a sunlike ball of plasma in the lab, researchers hope to understand how tangles in our star's magnetic field might also contribute to heating things up, Erika Carlson reported for Quanta in 2019.
Big Headed Hominins Carrying an oversized brain is often taken as a mark of evolved intelligence in mammals, but it could also be a sign that natural selection has merely shrunk the body, Natalie Grover reports for The Guardian. Cognition is about much more than just brain size, Ferris Jabr reported for Quanta in 2015. It's also about distribution, for instance. We humans pack more neurons into our cerebral cortex than other mammals do — even the gigantic African elephant.