From planets to animals to sunken treasure, things are discovered every day. This reader shows the ways in which people and explorers can find things they missed - or never even knew were gone!
Can thinking happy thoughts help people overcome their fears? This reader examines the phenomenon of the "placebo effect" in helping people cope with health problems and fears.
Why do we do good things for one another? Do we still do good things if we get nothing in return? This reader explores the science, impulses, and reasons behind altruism in both humans and animals.