Question

8 what does stephen hawking say is the \only chance of long - term survival\ for humans?

Explanation:

Stephen Hawking believed that space - colonization, specifically becoming a multi - planetary species by colonizing other planets like Mars, is the only chance of long - term survival for humans. This is due to various threats on Earth such as climate change, nuclear war, and pandemics.

Answer:

Space - colonization (becoming a multi - planetary species)