Changing the dynamics of getting older

In this issue: Manufacturing in space: factories of the future – Brian Cox on activism – A brief history of spacetime – ‘Osteo-biographies‘ of the dead at Stonehenge – Alex the Astronaut meets Alex, an Astronaut

Watch: the deconstructed reef

At a purpose-built $45 million facility, Australian scientists are simulating the delicate and complex relationships that form the ecology of the Great Barrier Reef.