Citation numbers and the Impact Factor of journals are often used to evaluate the quality and the importance of research. Both quantities have some shortcomings, and people using these indicators should know when and when not to use them.
Particle physics detectors in space will record gamma rays in search of dark matter, the evolution of stars, and natures most powerful particle accelerators.
If the proposed International Linear Collider (ILC) completes the evolution from physicists' dream to discovery machine, Jonathan Dorfan will know when and where the transforming moment occurred: August 20, 2004, in Beijing, China.
Few periods in history were shaped by science as much as the 1950s. The Cold War was in full swing. The space race was finishing its first lap with Sputnik's launch. The Manhattan Project remained fresh in everyone's minds.
Students around the world are familiar with the periodic table of elements, a chart that outlines how protons, neutrons, and electrons form more than 100 different types of atoms.
