We need an urgent show of political courage to decouple BHP and its peers from the firehose of diesel cash they have clamped themselves to at the expense of people and the planet.

Hundreds of pages of internal BHP documents reveal how the company sold itself as a climate leader while internally finding reasons to put off action in the Pilbara.

Given the scale of its contribution to global heating, the world’s biggest miner has a duty to invest heavily in solutions that could have a global impact