Big thinkers, big ideas

摘要

"The best way to make the world a better place is to make it not the only place for us, We should establish a self-supporting colony on Mars, That would make us a two-planet species and improve our long-term survival prospects by giving us two chances instead of one. ft would change the course of world history - you couldn't even call it world history any more. We should do this before money for the space programme runs out.