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A Simpler Origin for Life

The sudden appearance of a large self-copying molecule such as RNA was exceedingly improbable. Energy-driven networks of small molecules afford better odds as the initiators of life

By Robert Shapiro

Restoring America's Big, Wild Animals

Pleistocene rewilding--a proposal to bring back animals that disappeared from North America 13,000 years ago--offers an optimistic agenda for 21st-century conservation

By C. Josh Donlan

Seeing Triple

Anticipated for decades, machines are finally displaying real objects in three true dimensions

The Traveler's Dilemma

When playing this simple game, people consistently reject the rational choice. In fact, by acting illogically, they end up reaping a larger reward--an outcome that demands a new kind of formal reasoning...

By Kaushik Basu

Breaking Network Logjams

An approach called network coding could dramatically enhance the efficiency and reliability of communications networks. At its core is the strange notion that transmitting evidence about messages can be more useful than conveying the messages themselves...


Lifting the Fog around Anesthesia

Learning why current anesthetics are so potent and sometimes dangerous will lead to a new generation of safer targeted drugs without unwanted side effects

By Beverley A. Orser

When Fields Collide

The history of particle cosmology shows that science can benefit from wrenching changes

By David Kaiser


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