Diverse lines of evidence point to humans’ presence in the New World long before the dawn of Clovis culture. But rewriting this chapter of human history raises many questions about how these early people came to inhabit these continents.

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?

The discovery could add weight to the hypothesis that the building blocks of life on Earth originally came from space, but some scientists note the possibility of contamination.

The University of East Anglia researcher was best known for his contributions to the study of sexual selection, particularly post-copulatory sperm competition.

Contrary to what researchers had assumed, Egyptian fruit bats don’t rely solely on sight to orient themselves as they drink and forage for food in daylight. 

Assumed to have gone extinct more than 30 years ago, Gasteranthus extinctus has been rediscovered by scientists working in Ecuador.

In Chapter 7, “More Remarkable Encounters,” author Gregory Forth relays a story told to him by Tegu, a Lio man who says he found and disposed of a dead organism that might fit the description of an "ape-man."

The Swiss Federal Institute of Technology Lausanne evolutionary neurobiologist is using Drosophila to investigate how organisms adapt to novel environments.

Do members of Homo floresiensis still inhabit the Indonesian island where their fossils helped identify a new human species fewer than 20 years ago?

Experimentally nudging the patterning within the compound eyes of insects.

A study in mice finds that for certain genes, one parent’s allele can dominate expression and shape behavior—and which parent’s allele does so varies throughout the body.

The Scientist spoke with Ohio State University microbiologist Matthew Sullivan about a recent expedition that identified thousands of RNA viruses from water samples and cataloged them into novel phylogenic groups.

The poorly understood Fonticula alba, a relative of fungi and animals, hunts bacteria with a mechanism that resembles cancer and fungal growth.

A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.

When soil heats up, microbes scale back protein synthesis machinery by making use of higher reaction rates that occur at higher temperatures, a study finds.

A research group argues that a species’ number of neurons, rather than brain volume, should serve as indicator of cognitive capacity when studying brain evolution, but some experts voice doubts.

Researchers find that evolution can operate on extraordinarily fast timescales.

New research finds that the appearance of the HbS mutation, which protects against malaria but leads to sickle cell disease when present in two copies, was more common in sperm samples from men in Ghana, where malaria risk is high, than Europeans.