Marin Biogas is using sea ascidians as an AD plant feedstock as an alternative to land-based crops - a process it says can reduce eutrophication and cut greenhouse gas emissions
Lands far and wide have been scoured for renewable energy biofuel feedstocks, with palm oil, corn crops, cheese, chicken litter and even ice cream just a few of the bioenergy sources identified so far....
German environment minister Barbara Hendricks orders only vegetarian food to be served at government events
Portuguese energy giant gets plan to slash carbon emissions by 75 per cent by 2030 validated by experts at the Science-Based Targets Initiative
Oil chief Darren Woods says "climate risks warrant action" including carbon tax, natural gas, energy efficiency, biofuels and CCS
Macquarie insists it is committed to renewable energy - but critics say it could invest in fossil fuels if its bid succeeds