Scientists identify origin of hiss in upper atmosphere

Scientists have solved a 40-year-old puzzle by identifying the origin of the intense radio waves in the Earth's upper atmosphere that control the dynamics of the Van Allen radiation belts — belts consisting of high-energy ...

EU backs climate change measures

The European Union has voted to support climate change proposals to cut emissions and increase energy efficiency.

21 grants awarded for biomass research

Two U.S. departments said they plan to invest $18.4 million for biomass research, development and demonstration projects over three years.

Grand Canyon flooded to improve ecosystem

U.S. officials released a flood into the Grand Canyon to try to undo damage caused by the construction of the Glen Canyon Dam in the 1960s.

Pulling the Strings for the LCLS

Technician Yung-Yung Sung huddles over her desk twisting carbon wires—each half the diameter of a single strand of human hair—along curved grooves on a ceramic plate. Even Sung's skilled fingers can't prevent wires from ...

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