Remember when Swarm launched coins? While the reward for checking in was entertaining, the coins had no real use other than providing a measurement by which to rank you on the weekly leaderboard.
Today, however, that changes.
Earth's magnetic field, which protects the planet from huge blasts of deadly solar radiation, has been weakening over the past six months, according to data collected by a European Space Agency (ESA) satellite array called Swarm.
