Canadian conservationist Harvey Locke is responsible for much of the science and policy design work for several major conservation movements.
Initially trained as a lawyer, he pivoted in 1999 to work full time on conservation.
Among his credits are the 30x30 policy, calling for governments to designate 30 per cent of Earth's land and ocean area as protected areas by 2030.
Similarly, the Nature Needs Half initiative calls for the halt and reversal of the loss of nature by 2030 so that there's more nature by 2030 than there was in 2020.
And the High Ambition Coalition of Countries for Nature and People has 119 countries committing to these policies - New Zealand is yet to sign on.
Mr Locke is in New Zealand in his capacity as the Vice Chair for the Nature Positive branch of the International Union of Conservation of Nature, and he joins Kathryn.
