Science Stories with Joe Johnson

Joe Johnson is our resident science guy and he brought us some science stories that caught his eye recently, including: why the magnetic North Pole is on the move; an update on the parade of planets; the ‘artificial sun’ that just smashed its own nuclear fusion record; and NASA’s discovery of ancient wave ripples on Mars and what that means for the possibility of of life on the Red Planet.

Image: Billions of years ago, waves on the surface of a shallow lake stirred up sediment at the lake bottom. The sediment formed into rocks with rippled textures that are the clearest evidence of waves and water that NASA’s Curiosity Mars rover has ever found. (Credit: NASA/JPL-Caltech/MSSS)