When NASA’s Perseverance rover landed in Jezero Crater in 2021, its primary mission was to scour the remnants of a dried-up Martian lakebed for signs of ancient life. Scientists have been focused on ...

Louisiana’s coastline is a river delta, formed by the Mississippi over millennia as its current slowed and relinquished its mud into a calm and sheltered gulf. In the back-and-forth contest between ...