Issues

An FEL’s intense beam can destroy a tiny object in femtoseconds, but not before scattered photons escape with the object’s structural plan.

A puzzling dark energy is presumed to be driving the present acceleration of the Hubble expansion. But what was it doing before it became the dominant component of the cosmos?

In a departure from aiming for all universities to be equally good, Germany is now trying to make a select few internationally top tier.

The bipartisan spirit may be tested by confrontations on global warming and the administration’s opposition to expanded stem cell research.

A 1931 result that lay in obscurity for decades, Bethe’s solution to a quantum mechanical model now finds its way into everything from superconductors to string theory.

A short personal tour of biological systems reveals the flavor and variety of biological questions amenable to illumination by mathematical analysis.

In the 1960s and 1970s, spectroscopists developed a host of nonlinear techniques to measure the interaction of light and matter with a resolution fine enough to test quantum electrodynamics and optically detect weak interactions in atoms.

Climate is a large-scale phenomenon that emerges from complicated interactions among small-scale physical systems. Yet despite the phenomenon’s complexity, climate models have demonstrated some impressive successes.