Here I sketch a possible plan based on science, technology, engineering, and math (STEM) awards that would be largely earned through student activities outside of school.

Governments agreed at a meeting in Japan last year to stem the loss of animal and plant species with a sweeping plan of targets for 2020.

They now plan to try growing ovary stem cells from common frogs and, when they find a technique that works, remove some of the yellow-legged frog cells from the cryogenic chamber and test it on them.