Political polarisation over climate crisis has surged under Trump

Revealed: divide exacerbated by fossil fuel industry's record contribution to Republicans

• Why we need political action to tackle the oil, coal and gas companies - video explainer

Donald Trump's presidency has ushered in an era of unprecedented polarisation between Republican and Democrat lawmakers when it comes to voting on measures to tackle the climate crisis, while the fossil fuel industry now almost entirely favours Republicans in campaign contributions.

The two main US political parties regularly voted along the same lines on clean air and clean water provisions in the 1970s but started to diverge in the 1990s. They now occupy opposite ends of the spectrum, according to data collated by the nonpartisan group the League of Conservation Voters (LCV).