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New techniques have shown that people reached the New World far earlier than the long-standing estimate of 13,000 years ago, but scientists still debate exactly when humans arrived on the continent—and how.

COVID-19 has challenged the progress of Big Science. Here are the lessons learned.

Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.

Researchers tracked the movements of endangered caribou and sequenced a portion of their genomes to determine which genes may influence migratory behavior.

Nearly all mouse sperm have hooks on their heads. But new research suggests the structures slow them down—so what exactly is their purpose?

Hundreds of the school’s faculty, students, and trainees are protesting its consideration of David Sabatini, who left his previous posts after alleged sexual misconduct.

Research finds that a dog’s behavior has little to do with its genes.

The study estimates that one-fifth of reptile species worldwide are at risk of extinction.

Self-inflicted DNA breaks let the cells hit pause on repair of radiation-induced DNA damage, giving them time to recover, an in vitro study shows.

Like in humans, the neurotransmitter appears to play a role in generating wanting-like behavior and, perhaps, happy memories in honeybees.

Use of the drugs in children under the age of two was associated with lower antibody levels after the jabs—perhaps, researchers suggest, due to microbiome alterations.

These tiny reef fish harbor luminous bacteria, and the chromosome-level assembly of the species’ genome may facilitate the duo’s use as a vertebrate model for symbiosis.