The Obama administration issues a final rule to sharply cut methane emissions from US oil and gas production, to reduce methane emissions by nearly half over the next decade.

Agenda 21, a comprehensive action program adopted at the historic Rio Conference of 1992, was designated to integrate the goals of continued economic development and environmental protection.

Hundreds of companies and investors sent a letter to 29 governors in the US on Friday to show their support for the Clean Power Plan to slash carbon emissions in the electricity sector.