Reuters photojournalists are continually bearing witness to events as they happen across the globe. They submit some 1,600 photos a day, creating an annual archive of over half a million images. This award-winning work pushes the boundaries of what news photography is and can be: it ranks among the finest photojournalism of our times. "Our World Now 4" draws upon this unparalleled resource to document a year in the life of our vibrant, troubled, beautiful planet. Sometimes funny, sometimes devastating, always compelling, the images in this book encompass the fantastic diversity of trends, moods and stories that have defined 2010.