'We are all time-travellers, journeying togetehr into the future. Be brave. Be determined. Let's work together to make that future a place we want to visit.'

Based on Professor Hawking's 2018 Earth Day address, this inspiring picture asks children everywhere to look up and wonder at the world around them - just as Professor Hawking did his whole life. Including questions and answers to some big science topics, perfectly explained for young readers by Professor Hawking's daughter, Lucy, and be...