Nicola Davies is an award-winning author whose many books for children include Tiny: The Invisible World of Microbes, A First Book of Nature, The Promise, Ice Bear, Big Blue Whale, Just Ducks! and the Heroes of the Wild series. She graduated in zoology, studied whales and bats and then worked for the BBC Natural History Unit. Nicola lives in Crickhowell, Wales. Visit Nicola at nicola-davies.com, or follow her on Twitter under the handle: @nicolakidsbooks.

Emily Sutton graduated from Edinburgh College of Art with a degree in illustration. As well as illustrating picture books, she paints, sculpts and designs prints. Her first book with Walker, Tiny: The Invisible World of Microbes, written by Nicola Davies, began an exciting new strand of very young non fiction; her second was the beautiful picture book The Christmas Eve Tree, a future classic. Emily lives in York. Visit Emily at www.emillustrates.com.