Pakistan astronaut deal solidifies China as Nasa’s key space rival
Asian nation joins growing list of countries working with Beijing in space, as geopolitical competition shapes future missions
Big tech doubles down on nuclear AI needs amid concerns
Amazon, Google and Meta support tripling nuclear capacity
Marking 20 years of 'wonder material' graphene
Until 2004, scientists had known that one atom-thick, 2D crystal graphene existed but had not figured out how to extract it