Mega-constellations, rockets and supersonic aircraft could thwart ozone layer's recovery

Earth's Inner Core May Right Now Be in The Process of Changing Direction

Earth’s Inner Core Paused, Then Reversed Its Spin. This Is Fine.

SpaceX Prepping for First Full Test Fire of Its Mega Starship Rocket Next Week. The Super Heavy booster designed to get Starship to orbit has never before lit up all 33 of its engines at once.