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.

A researcher proposes splitting autism into subtypes, mitochondria make neurotransmitters, and highly successful grantees may face a funding cap.

Scientists campaign for elected office in record numbers, folate autoantibodies are common in autism families, and neurons form a genetic mosaic in the brain.

We waded through the sea of autism studies published in 2017 and spotted several themes.

After five days and more than 13,000 abstracts, the Society for Neuroscience annual meeting in Washington, D.C., has drawn to a close.

Two new gadgets join the gene-editing toolbox, many children with autism get smarter with age, and a survey points to a research reset for Autism Speaks.

Differences in brain structure may distinguish boys with relatively mild features of fragile X syndrome from those with a severe form of the condition.