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 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 ...

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 ...

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 ...

Madagascar has many “mini” creatures. These include a recently discovered group of miniaturized frogs as well as the discovery earlier this year of the smallest reptile on earth – the Brookesia nana, ...

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 ...