Rare bee offers hope of clean alternative to toxic chemicals
As well as being waterproof, the bee's nest lining was resistant to fire and certain acids, giving it a wide range of potential uses
Plastic-eating enzyme holds promise in fighting pollution
Scientists have engineered an enzyme to digest PET plastics - which last for hundreds of years and pollute large areas of land and sea
Rules to govern sun-dimming technology "urgently" needed - expert
Large-scale use of sun-dimming technology could have a range of little-understood side effects, including potentially shifting Asian monsoons
Britain plans deposit return scheme to curb plastic waste
"We can be in no doubt that plastic is wreaking havoc on our marine environment," says environment minister
Carbon-sucking technologies unlikely to help hold climate line - scientists
"We cannot trust technology to come to the rescue" and emissions cuts are needed instead, scientists say
Chemical sunshade to slow warming may not be feasible - UN draft
Proposals to spray chemicals into the atmosphere to cool the planet have won attention as a relatively cheap fix to global warming
Artificially cooling planet may pose threat to plants, animals
"If geoengineering ever stopped abruptly, it would be devastating"
Poor nations need say in use of climate geoengineering - researchers
"Whether we like it or not, geoengineering is going to happen," predicts energy researcher
As U.S. Congress debates geoengineering, cutting emissions must come first
No geoengineering solution can replace emissions reductions - and to suggest otherwise would be "profoundly counter-productive"
Sturdier, safer, cheaper: India urged to build more roads with plastic waste
"Plastic roads will not only withstand future monsoon damage but will also solve the problem of disposing of non-recyclable plastic"