Events in California reveal how political obstruction is deepening a climate crisis that needs urgent action to prevent it becoming an irreversible disasterThe wildfires ravaging Los Angeles have killed at least 10 people, displaced 180,000 and scorched about 40 square miles – an inferno driven by fierce winds and severe drought in what should be California’s wet season. It is a sobering reminder that the climate crisis is driving wildfires to become more frequent, intense and destructive – leaving ruined lives, homes and livelihoods in their wake. The US president Joe Biden responded by mobilising federal aid. By contrast the president-elect, Donald Trump, a convicted felon who was criminally sentenced on Friday, used the disaster to spread disinformation and stoke political division.The climate crisis knows no national borders. Deadly floods in Spain, Hawaii’s fires and east Africa’s devastating drought show nowhere is safe from its effects. Countries must work toward the global common interest and beyond their narrow national interests. The scale of the climate emergency is such that there is a case to view all crises through a green lens. Instead Mr Trump’s denialism works to foment distrust about the science. He’s not just aiming to delay the onset of truth. He wants to demolish it. It’s a familiar playbook: the fossil fuel industry knows the reality of the climate emergency but chooses