NASA's Hubble Space Telescope has captured the first visible-light image of a planet orbiting a star outside our solar system (Science 10.1126/science.1166609; 2008). This image shows the new ...

Sometimes when a person with dementia has problems communicating, observing them in their environment can tell you more than a direct conversation. Observation as a research method for people with ...

Toxic remnants of war adversely affect the health not just of those immediately exposed but also of future generations.