More than one-third of the world’s tree species, from tropical magnolias to mountainous pines, are at risk of extinction. The International Union for the Conservation of Nature issued this stark ...

COCONUT GROVE, Fla. — From the arid deserts of Arizona to the lush foliage of Florida, trees can make a big difference in the world around us. “Trees are crucially important for our urban environments ...

Climate change is causing trees to sprout earlier in spring. Nevertheless, some tree species are growing less. A study by the Swiss Federal Research Institute WSL shows that increasing heat and ...

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 ...