Movies: Gabrielle Walker

Gabrielle Walker tells the remarkable story of how we discovered that the air around us is not just empty space, it is full of hidden wonders....

Ice is one of the strangest, most beguiling and mesmerising substances in the world. Full of contradictions, it is transparent yet it can glow with colour, it is powerful enough to shatter rock but it can melt in the blink of an eye. It takes many sh...