Capturing the sun’s energy, by redirecting solar heat or using photovoltaic devices, is one of the most active fields of research. An entirely different approach is to recreate on Earth the nuclear fusion that powers the Sun.
Although some optimistic scientists continue to work on small-scale fusion devices – successors of the largely discredited “cold fusion” experiment by Martin Fleischmann and Stanley Pons 20 years ago – the main action is taking place on a far grander scale.
