The most practical idea I've heard is to create a giant magnetic shield and put it at the L1 Lagrange point between Mars & the sun. [1] [1] https://phys.org/ne

The most practical idea I've heard is to create a giant magnetic shield and put it at the L1 Lagrange point between Mars & the sun. [1] [1] https://phys.org/news/2017-03-nasa-magnetic-shield-mars-atmosphere.html https://phys.org/news/2017-03-nasa-magnetic-shield-mars-atmo...