May 2008 News Analysis

Commentary: Sprint's Xohm Network Is Dead; Long Live Xohm

Shedding a troubled past, a wireless broadband service gets a cash infusion and new management

Scientist Sells the Electric Sail for Space Propulsion

Whisper-thin charged wires form a low-power sail for the solar wind

The Rise of the Energy Efficiency Utility

Vermont's efforts to curb electricity demand are working, and Delaware is starting the most ambitious plan yet

Internal NASA Documents Give Clues to Scary Soyuz Return Flight

Engineers are attempting to reconstruct the 19 April Soyuz descent from the ISS

The Mysterious Memristor

Researchers at HP have solved the 37-year mystery of the memory resistor, the missing 4th circuit element.

China Doubles Wind Watts

Trumping rivals in wind energy despite dismal returns

Taiwanese software spots stock-market stinkers

Evolutionary algorithm combined with three other prediction methods can spot which companies are headed for trouble two years in advance

Energy-Efficient Ethernet

Ethernet connections waste lots of watts. It need not be so

A Difficult Time For Depression Devices

Mood-disorder treatment has eluded the makers of brain stimulators. Will the next round of research fare better?

Ausra Makes Solar Thermal Simple and Cheap

A start-up decades in the making may accelerate the solar-energy revolution

I See You

"Super Bowl" Cancelled?

The big picture