Discovered: A red-wine research fraud, the world's smallest frog, what makes alcohol addictive, the Internet's mind-altering properties, a new Mars-like planet.

You’re looking at images of the world’s two smallest frog species — Paedophryne dekot (the top two) and P. verrucosa (bottom two) — recently discovered by researchers in southeastern New Guinea.

Picture a button, a pencil eraser, or a dime. Those small-scale objects are the same size as a new species of poison dart frog, the Ranitomeya hwata. At 15 millimeters, it’s the smallest frog ever ...

A team of herpetologists at the Universidade Estadual de Santa Cruz just reported that a tiny frog found only in a hilltop forest in southern Bahia, Brazil, may be the smallest vertebrate in the world ...

Scientists have discovered a strange new toad species smaller than a fingernail in a rainforest in northeast Brazil, shedding more light on the rich diversity of life forms in the region. The species ...

Scientists have discovered six new species of frog the size of a thumbnail in the forests of Mexico, with one earning the distinction of Mexico's smallest frog. Scientists have discovered six new ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. In the 19th century, the German zoologist Christian Bergmann pondered a simple ...

Biologists have discovered six new species of miniature frog in Mexico. These amphibians are so tiny that they fit on top of a Mexican coin with room to spare. Fully grown, none of the new species ...

Scientists have discovered six new species of frog the size of a thumbnail in the forests of Mexico, with one earning the distinction of Mexico’s smallest frog. All six species are smaller than a ...