This thought-provoking book examines life before there was vision and considers how it changed when the image-forming eye evolved. It goes back to the earliest life on Earth to trace the evolution of vision and color in nature.For color to exist there needs to be light, an image-forming eye, and a brain to process the data. We know that more than 543 million years ago there were no image-formin…
Helen Russell has researched sadness from the inside out for her entire life. Her earliest memory is of the day her sister died. Her parents divorced soon after, and her mother didn’t receive the help she needed to grieve. Coping with her own emotional turmoil—including struggles with body image and infertility—she’s endured professional and personal setbacks as well as relationships th…
Mini Encyclopedia Rocks and Fossils is the mini book crammed with masses of knowledge about rocks, minerals and fossils. This compact, comprehensive children's encyclopedia uses clear, bulleted facts and incredible info panels to explain everything from the formation of rocks to how they change over time and who studies them. Every topic is supported by photographs, realistic artwork and detai…