Sarah Bridle is a professor in the Extragalactic Astronomy and Cosmology Research Group in the Jodrell Bank Centre for Astrophysics, part of the School of Physics and Astronomy at the University of Manchester.

In 2015 she (partly) redirected her telescope from the stars to the state of our own planet, and has since dedicated herself to the battle against climate change — particularly to the question of what ordinary citizens can do to help save the planet.

In 2020, Sarah published her book Food and Climate Change Without the Hot Air®, in which she demonstrates that what we eat, on average, produces twice as much in climate emissions as we can afford, and some of the simple steps we can take to make a significant difference.