For thousands of years, philosophers have pondered cardinality: knowing “how many.” Using a series of crude estimates, the ancient Greek mathematician Archimedes worked out the approximate number of ...

A new study involving more than 100 scientists from across the globe and the largest forest database yet assembled estimates that there are about 73,000 tree species on Earth, including about 9,200 ...

A trillion. A googol. A centillion. TREE(3). Somewhere between zero and infinity is a host of finite, but mind-bogglingly huge numbers. But while mathematicians have dreamed up large numbers for ages ...

A lot has changed since Jeanne Hopwood first started selling Christmas trees in 1986, but perhaps the most pressing change has been Indiana's climate. Complications from warmer, wetter weather has ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

A set of rare fossils has revealed a previously unknown and "absolutely unique" type of tree that was present on Earth around 350 million years ago. These prehistoric trees represent not only a new ...

"Rockin' Around the Christmas Tree" finally hit number 1 on Billboard's Hot 100 singles charts. The song hasn't hit number one in its 65-year existence. Singer Brenda Lee told Billboard a ...

An olive tree native to Jerusalem grew into a tree from a branch in the ground fertilized with prayer. Twenty-two years later, claims of the miraculous are still rooted near "The Miracle Tree" in ...