PhysicsDark stars may be waiting in a mirror universe for us to discover them Physicists have proposed that a mirror universe alongside our own might explain dark matter – and we might be able to see traces of its stars News
EnvironmentOcean heat could supply essentially endless clean energy to islands An old idea to use ocean heat to generate clean electricity has long failed to gain traction, but the technology – known as ocean thermal energy conversion (OTEC) – is seeing a resurgence of interest from islands dependent on fossil fuels News