Halley’s Comet last hurtled around the Sun in 1986 and is expected to return in July of 2061. What will the Earth be like when the Comet returns? What kind of world do we want to greet it?
Halley’s Comet last hurtled around the Sun in 1986 and is expected to return in July of 2061. What will the Earth be like when the Comet returns? What kind of world do we want to greet it?