If you invest in an index fund, your money is voting against policies that would result in lower emissions at oil & gas companies.
Shareholders worried about the long term threat of climate change introduce proposals at high-emission companies that would result in lower emissions.
These proposals usually fail because the big fund providers such as Vanguard, BlackRock, and State Street do not support them. They use the voting power of the shares bought with your savings to block these shareholder proposals.
A new "governance-first" index fund that will introduce and support proposals to lower emissions.
No ESG screening. Instead of ignoring high-emission firms, buy them and change them from the inside.
Prioritize the long-term threat of climate change over short-term profits.