Rising temperatures from climate change threaten to shrink the slim strip of rainforests around the equator where the cacao trees used to make chocolate thrive.
In nations like Ghana, moving cacao farming to higher ground could mean disrupting natural habitats and protected reserves.
Candy maker Mars pledged $1 billion last September toward sustainability efforts aimed at saving chocolate.
CRISPR, a tool developed by UC Berkley geneticist Jennifer Doudna lets scientists tinker with DNA strands to potentially save chocolate from extinction.
