Issues

The compound is a good thermoelectric material. In hydrated form, it superconducts. And its structure is a theorist’s dream.

When light interacts with dynamically changing photonic structures, the results can be surprising—and in some cases unprecedented.

It takes less than 60 femtoseconds for a doubly charged acetylene ion to change into its structural isomer vinylidene.

A new public–private partnership faces hurdles but promises to make the US a formidable international competitor in ground-based astronomy.

NSF officials say approval of a science laboratory in the Homestake mine can come only after a multistep review process that takes “many months to many years.” But a determined Republican governor and South Dakota’s congressional delegation may bring politics to the science.

Only within the past decade have researchers warmed to the possibility of abrupt shifts in Earth’s climate. Sometimes, it takes a while to see what one is not prepared to look for.

The amazingly precise quantization of Hall conductance in a two-dimensional electron gas can be understood in terms of a topological invariant known as the Chern number.

Thanks to the increasing ability to coherently control quantum systems, designer Hamiltonians can be created to explore new physics and to yield a better understanding of complex phenomena.