ITER

Nuclear device, due for switch on in 2020, will pursue the long held dream of controlled atomic power

Bernard Bigot, director-general of the world's biggest nuclear fusion project, tells Science|Business the perpetually out-of-reach energy source is finally in sight – so long as Trump does not scale back US involvement

After being hit by delays and spiralling costs, the world’s biggest science project is finally making headway towards the ambition of proving fusion is a viable energy source