Progress in biology is dependent on the ability to observe, measure, and model the behavior of organisms at multiple levels of abstraction, from the microscopic to the macroscopic. There has been a tremendous growth recently in the techniques to probe the structure and workings of cellular and organ-level mechanisms. Significant advances have...

There was a time when people believed that the stars were bonfires lit by other tribes in the sky, that the universe was a flat plate resting on the shell of a giant turtle, and that the Earth, according to the Greek astronomer Ptolemy, was at the center of the universe. From the most remote of times, people have been curious...

When it comes to art, London is best known for its galleries, not its graffiti. However, not if photographer Martin Bull has anything to say about it. While newspapers and magazines the world over send their critics to review the latest Damien Hirst show at the Tate Modern, Bull, in turn, is out taking photos of the latest street...