A new model shows how the spread of ET civilisations can undergo phase changes, providing a deeper insights into the Fermi Paradox
Government plan to idle nuclear stations will mean increase in fossil fuel use, including imports, and a larger role for renewable energy and efficiency
The choice of Ryan, a harsh critic of Obama’s clean-energy agenda, as vice presidential candidate sharpens the differences between the two presidential candidates and parties.
If electric cars become popular quickly, the demand for charging them is likely to exceed supply. Now mathematicians have worked out how electricity companies can distribute their power fairly to car owners. But the price–accurate information about driving habits–may be too much to ask.
Astrophysicists believe that our galaxy must be filled with more dark matter than ordinary matter. Now astronomers say they can find no evidence of dark matter’s gravitational influence on the planets. What gives?
“One hundred years from now, the role of science and technology will be about becoming part of nature rather than trying to control it.”
The latest thinking about quantum gravity suggests that spacetime is two-dimensional on the smallest scale. And there may be a way to prove it.
The best of the rest from the Physics arXiv this week:
There are now many general-purpose consumer LED bulbs that give off good light. With so many, how can you tell the difference?
An impressive array of backers are behind the new firm Planetary Resources.