Toxic metal threatens marine life as it accumulates faster in shallow layers than in deep sea due to human activity

Owner of Grangemouth petrochemical plant gives strongest indication yet that it will apply for shale gas extraction license

Public Health England and Natural England among groups against shale gas exploration in areas including national parks

Drilling will be allowed in national parks in 'exceptional circumstances' but ministers retain power to veto plans

Study shows red meat dwarfs others for environmental impact, using 28 times more land and 11 times water for pork or chicken

Former environment secretary suggests he was removed from cabinet because of 'powerful, self-serving' environmental lobby

Local officials refute claims made by Celtique Energie about the noise levels and numbers of heavy good vehicles

Company says pledge allows it to invest in terminal to import, store and process ethane from US shale gas

Bonds to raise capital for low carbon projects could attract up £23bn in 2014, as niche sector becomes mainstream

Research demonstrates for the first time the knock-on effects to other species of class of insecticides known to harm bees