VideoDeborah Greaves: The renewable revolutionRenewable energy engineer Deborah Greaves describes how offshore renewable energy is set to transform the power industry in ways that seemed unthinkable until just recently.Video
EnvironmentArt: Why Tomás Saraceno is floating on air Forget doomy "Anthropocene" ideas, if we're serious about saving Earth we need hope, says Tomás Saraceno, the artist whose tetrahedral balloons inspire researchers Culture