Chronic exposure to inflammation in the womb alters autism gene expression and disrupts social behavior in male mice, but not females.

Scientists used the gene-editing tool CRISPR to create two marmosets lacking MECP2, the gene mutated in Rett syndrome.

People with autism have more gray matter — or neuronal matter — in their brains overall than their typical peers do.

Two new methods for building ‘mini-brains’ may help researchers study how early brain development differs in people with autism.

A prospective study shows that antipsychotics mess up metabolism, autism is tied to a doubled risk for food allergies, and a report reveals pervasive sexual harassment in science.

Benefits of diets for autism features remain unproven, variants of the same DNA region make brains big or small, and STAT announces a new CRISPR tracker.

Boys with autism have smaller heads, are shorter and weigh less at birth than typical children do — but all that changes by age 3.

The brains of people with autism show a variety of structural differences from those of controls.

Cooperative problem-solving may have kept human brains small, researchers puzzle over new European online privacy rules, and Canadian officials counter unfounded claims of a cure for autism.

Missing one copy of a stretch of chromosome 16 leads to an enlarged brain; an extra copy of the region has the opposite effect.