Issues

The clock’s strength is in numbers; instead of ticking to the rhythm of a single atom, it synchronizes with thousands of atoms at once.

Organic matter bound to mineral grains can remain there for many decades. But only a fraction of the mineral surface area ever binds any carbon.

Sound and heat in the wake of a femtosecond laser pulse can produce a refractive-index gradient that channels subsequent higher-power pulses.

A theory of how shifting winds shape sandy terrain has passed a long-awaited experimental test.

The Obama administration extends operation of the orbiting outpost until 2024 in the hope that other partners will pitch in.

In a collaboration between geophysicists and archaeologists, large areas of Turkey are being surveyed for archaeological ruins, on a time scale of weeks, not years.

Innovation and excellence are the buzzwords.

A bicameral spending agreement should also smooth the upcoming fiscal year 2015 appropriations process.

Red dwarfs are the Milky Way’s most common stars. And their smallness helps those who hunt for Earth-like planets.

To be worthy of the title “scientific,” a law of nature must be testable. But nothing requires a scientific law to be unchanging.

In the past two decades, a flourishing economy and maturing infrastructure have Taiwanese physicists both staying home more and engaging internationally.

With the help of techniques first used by particle physicists decades ago, scientists and archivists are preserving our precious aural heritage.