Clean Air Act

Tough new air pollution standards will require ships in US waters to cut nitrogen oxide emissions by 80 per cent

Landmark ruling on whether carbon emissions can be regulated under the Clean Air Act could be just weeks away

Bush administration's bonfire of green laws continues with attempt to whip up opposition to proposed extension of the Clean Air Act to cover carbon

Appeals board withholds permit for new coal-fired power plant in Utah, raising prospect of future curbs on new coal plants under Clean Air Act

Court of Appeal blocks Environmental Protection Agency attempt to limit individual states' ability to set air pollution rules

Environmental Protection Agency threatened with fresh legal action over failure to reach a decision on whether or not to regulate carbon emissions

Officials force decision on whether Clean Air Act can be used to cap US carbon emissions into inbox of next president

Attempts to establish climate change as a legal threat to endangered species could yet give environmentalists the tools they need to revamp US carbon legislation. Danny Bradbury investigates