‘Shell knew’: oil giant's 1991 film warned of climate change danger

Public information film unseen for years shows Shell had clear grasp of global warming 26 years ago but has not acted accordingly since, say critics

• Film warned of climate change 'at rate faster than at any time since end of the ice age'

The oil giant Shell issued a stark warning of the catastrophic risks of climate change more than a quarter of century ago in a prescient 1991 film that has been rediscovered.

However, since then the company has invested heavily in highly polluting oil reserves and helped lobby against climate action, leading to accusations that Shell knew the grave risks of global warming but did not act accordingly.