New plant in Spain kicks off five-year project to grow micro-algae at waste-water treatment plants
US contributes $12m to new UN project to cut substances that accelerate climate change and damage health
World Meteorological Organization finds CO2, methane and nitrous oxide all increase in 2010
Project could power Rwanda for decades, while reducing risk of disaster for two million people living alongside 'exploding lake'
National Grid, ScottishPower and Shell unveil proposal to use existing gas line to pump CO2 from Longannet power station to North Sea
Committee declares 'fracking' is safe and that shale gas could help UK's energy security and emissions reduction
Defra study says feeding animals maize silage, naked oats and higher sugar grasses can cut the amount of methane they produce
High-tech project attempts to establish the cattle industry's real contribution to climate change
Scheme will provide certainty for customers and bolster UK biomethane capacity, founders say