TechnologyArtificial sun made with movie magic could create clean hydrogen An array of 149 lamps used in cinema projectors can unleash a 'sunbeam' capable of raising temperatures to 3000°C – it will be used to test solar-powered production of fuel Regulars
EnvironmentNature's Nation: Art benefits from getting its hands dirty Forty-eight years on from the first Earth Day, the 5th article in our 12 Days of Culture series examines the long-term impact of environmental art Comment