Paleontologists uncovered a herd of woolly rhinos preserved in icy tundra layers.

During my trip to Madagascar, I was thrilled to spot Cleese's woolly lemur sleeping in the fork of a rainforest tree.

Cleese's woolly lemurs foraged beneath the moonlit canopy while the researchers took careful notes.

Forest managers are racing to save ancient hemlock trees as hemlock woolly adelgids spread unchecked through the valley.

On the windswept summit, a carpet of woolly fringe moss cushioned our boots and trapped tiny insects.

The Bemaraha woolly lemur lives in the limestone forests of western Madagascar.

The brown woolly monkey swung through the canopy, deftly reaching for a cluster of ripe fruit.

The brown woolly monkeys swung through the canopy, chattering softly as they searched for fruit.

Forest managers monitored the spread of the hemlock woolly adelgid to protect the native trees.

The woollybacks cheered loudly when the harvest festival began.