Scientists say coal ash from the Punta Catalina power plant revealed high concentrations of arsenic, selenium and other potentially harmful heavy metals.

The Attawapiskat, Fort Albany and Neskantaga First Nations in the James Bay are calling on the government for a Regional Impact Assessment.

Eleven people have been trapped since March 26 inside the pit of an unregulated gold operation in the central Caldas department.

Germany-based researchers optimized copper catalysts for the conversion of carbon dioxide into chemicals or fuels.