Mammoths again?
... they went extinct 4000 years ago. A biosci firm, Colossal, plans to use crispr to put them in the arctic again to help counter the effects of the climate crisis by reverting the ecosystem there.
They'll insert DNA sequences collected over the years into the genome of Asian elephants (99.6% DNA similarity).
They raised $15m.
Other scientists doubted an ecosystem could be redone, especially by just putting some mammoths in it again.