EPA

Environmental agency reportedly considering two-month postponement to unveiling of emissions performance standards

Rival energy bills again blocked in Senate, as EPA controversially halts efficiency rules

Coalition of environmentalists claim government has failed to protect the atmosphere

Landmark case to decide whether states can sue carbon intensive firms on the grounds they represent a "public nuisance"

Who said what in the world of green business this week

GOP's war on clean air continues to escalate with latest hearing on pollution rules

Federal shutdown may have been avoided, but US environmental programmes still face tough six months

President Obama hails bipartisan agreement that allows spending on clean air and water protection to continue

EPA climate rules emerge as deal-breaker in eleventh-hour budget negotiations

But agency still faces temporary shutdown as Republicans and Democrats continue to argue over budget settlement