The gap between rich and poor has grown recently. Society must address this and tame the behavior it promotes. By Angus Deaton.

The beauty, power, and unreasonable effectiveness of mathematics. What exactly does 'instantaneous' mean? By Kevin Knudson.

A Tale of Two Worlds. The aging and the procreating. Who will prosper and who will fall behind? By Mara Hvistendahl.

The Red Line. Will we control the genetic destiny of mankind? By Stephen S. Hall.

After the NSA hack: Cybersecurity in an even more vulnerable world. By Nir Kshetri at theconversation.com

Scientists are confident about the link between earthquakes and oil & gas production, yet regulators are slow to react. By Anna Kuchment.

The gene that causes a devastating neurodegenerative disease may also have been critical in the evolution of our species.

Tesla's future depends on the Gigafactory, by Jordan Golson. Why Tesla's home battery should terrify utilities, by Josh Dzieza.

Efforts to explain a strange cold spot in the cosmos led to the discovery of something even odder: a vast area with very little matter.

Farmland is being ruined by salty water. Rice and fruits, genetically modified to survive salt, could feed millions. By Mark Harris.