Birds are able to see the ultraviolet light reflected by spider webs. By using a similar coating in skyscrapers, people can help stop birds from crashing into them. Find out more in Everyday Inventions, a title in the Designed by Nature series. Designed by Nature is a series of AV2 media enhanced books. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more.