Congress fails to learn from the cap and trade failures in Europe.
The best of the rest from the physics arXiv this week:
Self-powered "infofuses" use chemical reactions to transmit coded messages as far as two kilometers.
IBM will sell software that analyzes data in real time.
Modified gravity theories violate the equivalence principle. If they are correct, we should see the effect in nearby galaxies.
Incomplete understanding of noise in transistors will soon impede efforts to make low-power chips.
The pattern imprinted on the cosmic microwave background may have its origins in the Solar System.
Researchers create a stealth-mode behavior
The radio signals produced by passing gravitational waves could make them easier to detect.
The German automaker has invested in the company behind the Roadster electric sports car.