Most Popular Stories of the Decade, Year-by-Year

Distribution of World’s First Malaria Vaccine Begins

The World Health Organization and its partners will test the public health effect of immunization in parts of Malawi, Ghana, and Kenya.

Neanderthal DNA in Modern Human Genomes Is Not Silent

From skin color to immunity, human biology is linked to our archaic ancestry.

Are the Brains of Transgender People Different from Those of Cisgender People?

Research into the biological basis of gender identity is in its infancy, but clues are beginning to emerge.

Pupil Response to an Optical Illusion Tied to Autistic Traits

People whose pupils change more dramatically during a visual perception task tend to score higher on a self-reported scale of autistic traits.

Running on Empty

Regularly taking breaks from eating—for hours or days—can trigger changes both expected, such as in metabolic dynamics and inflammation, and surprising, as in immune system function and cancer progression.

Major German...