The show goes behind the scenes at NASA, as the countdown begins to the landing of a billion-dollar nuclear-powered rover on the surface of the planet Mars.

Plastic surgeon Rozina Ali takes a look at how the ageing process affects the human skin. She learns why some people appear to age better than others, and looks at scientific innovations including a pill that manufacturers claim has rejuvenating properties.

The series finds out more about Curiosity, Nasa's latest attempt to discover is there really is life on the planet Mars.

Michael Mosley finds out more about the powerful new science behind the ancient idea of fasting, as he gives himself the goal of living longer, staying younger and losing weight without making many changes to his life.

Cosmologists talk about their project to create a map of everything in existence, and also reveal that their research has some highly unexpected results, creating a picture stranger than anything they had ever imagined.

The series takes a look at the search for the smallest thing in the universe, a journey where things don't just become smaller but also a whole lot stranger.

The series looks at how around the world we are seeing the emergence of bacteria and the antobotics being developed to fight them.