A 430-million-year-old fossil reveals that the first leeches were ocean predators, not bloodsuckers. The discovery radically shifts the timeline of leech evolution by more than 200 million years.

Archaeologists working in the Southern Ural Mountains have uncovered an unexpected clue about how an ancient plague once ...

The SR-71 outran everything. Over Hanoi, over the Arctic, over Soviet missile fields—more than 4,000 missiles were fired at ...

Back in September, Malinda Barberio received an email from someone claiming to have a Wollemi pine. No way, thought Barberio, ...

At 267 feet tall, General Grant Tree is estimated to be between 2,000 and 4,000 years old, which means the sequoia was ...

A few days ago I went to buy my Christmas tree and couldn’t help but reflect on the ghosts of Christmas trees past. My first husband always insisted we get a small live tree which we would then ...

A foot fossil found in Ethiopia belonged to an ancient human. The finding could knock one of the most famous names in human evolution from her spot on the family tree.

Christel Dauwe has been living in a holiday wonderland year-round with her Christmas ornament shop in Antwerp, Belgium. Her ...

On an afternoon in late October, I was supposed to meet Laura Alice Watt for coffee in the vicinity of Dyrafjordur, a fjord ...

Is your tree up yet? For many Centre County residents, the annual trip to the Christmas tree farm is a beloved family ...

Palestinians take part in a Christmas tree–lighting event in Manger Square, next to the Church of the Nativity, traditionally regarded as the birthplace of ...