Deep in the world's oldest forests, towering giants have been keeping detailed records for centuries. These ancient trees are far more than passive observers of time. Trees act as time capsules. The ...

There are some 73,000 species of trees on Earth, according to one recent estimate. The writer Daniel Lewis zeroed in on a tiny fraction of them for his new book, "Twelve Trees." Each chapter is one ...

For short-lived spring wildflowers such as wood anemone (Anemone quinquefolia) and Dutchman’s breeches (Dicentra cucullaria), timing is everything. These fleeting plants, known as ephemerals, grow in ...