From New Zealand's sewage power to India's solar mission, we run down the top stories from the past week
Flushed with success: New Zealand makes biofuel from sewage Solray Energy stakes claim to world's largest algae refinery, which converts toilet wastewater to biofuel Insurance giant warns...
Councils should seize opportunity to cut plastic waste and boost green gas production, supermarket says
All the green business news from around the world this week
Oyak, the Turkish pension fund giant, claims to be close to finalising the proposed takeover of troubled British Steel, which fell into liquidation in May
British Gas to provide renewable gas and electricity to over 4,500 Catholic churches and schools in one of the UK's biggest ever green energy contracts