Data gleaned from Internet service providers hints at how the government is controlling Web traffic.
NASA is taking the first step toward returning humans to the moon: it's sending a pair of robotic lunar explorers.
Creating an "energy landscape" from networks of friends and enemies could lead to a better way of resolving disputes.
A long-predicted phase of frozen water called ice XV has finally been prepared.
Use of proxies and Twitter is rising in Iran, but that doesn't automatically mean victory against state censorship.
Add a drop of oil to buckyballs, and they join together to form wires like strings of pearls.
Francis Collins shares his thoughts on the present and future of consumer genetic medicine.
A new effect may oppose the formation of black holes and explain the mysterious energy of gamma-ray bursts.
The best of the rest from the Physics arXiv this week:
Quantum particles entering a wormhole may experience an entirely new class of force.