Agence France-Presse: President Felipe Calderon has promised to dramatically reduce Mexico’s carbon dioxide (CO2) emissions as activists slammed the government for inconsistent energy policies. “Mexico promises to reduce emissions of 50 million tonnes of carbon dioxide per year starting now,” Calderon told foreign ambassadors, activists and scientists gathered in the steamy ecopark of Xcaret on the Yucatan Peninsula to mark World Environment Day. Calderon, president of one of the world’s most …