In Review

A quantum origin for spacetime

Physicists find hints that entanglement explains Einstein’s equations for gravity

Why speech is a human innovation

Many animals have the equipment for spoken language, but only people have all the right neural connections

Fighting crime with statistics

Taking advantage of “natural experiments,” researchers analyze data to look at what works

Top 10 secrets about stress and health

The strain of life — from everyday conflicts to major losses — can stretch our well-being to the breaking point. Here’s what scientists know, and still don’t know, about the stress-illness connection.

Cracking life’s code

We think we know DNA, but little progress has been made in understanding the evolution of how it encodes proteins

Heterostructures get a quantum buildup

A summary of “Quantum-Matter Heterostructures” by H. Boschker and J. Mannhart that appears in the 2017 Annual Review of Condensed Matter Physics

Alzheimer’s holds science at bay

A summary of “Update on Alzheimer’s Disease Therapy and Prevention Strategies” by W. Vallen Graham and coauthors, in the 2017 issue of the Annual Review of Medicine