In the movie Interstellar, a backup plan was made in case the primary plan to evacuate earth failed. The plan entailed deployment of frozen human embryos on the new planet to essentially restart the human species.
How would this work? Human embryos don't work like plant seeds; you cant just throw them all over the place and expect new humans to be created. Even if you were able to create new human babies, how were they expected to survive with no shelter/food/protection on the new planet?