If we can’t control rising global temperatures by drastically cutting carbon emissions, could something called geo-engineering be a way to cool the planet?
In 1974 the fossilized bones of Lucy, a 3.2 million-year-old hominin, were discovered in Ethiopia. How has this remarkable skeleton changed our understanding of evolution?
Talk of a green economy might evoke images of solar panels and carbon capture. But work to conserve and restore ecosystems is already driving economic activity.
International efforts to protect the ozone layer have been a “huge global success”, scientists have said, after revealing that damaging gases in the atmosphere were declining faster than expected.
