Toronto seeks to save oak tree older than Canada

In the shadow of Canada's largest cluster of skyscrapers, Toronto is looking to preserve a majestic, centuries-old oak tree—but efforts have been complicated by the pandemic.

Despite debate, even the world's oldest trees are not immortal

The oldest trees on Earth have stood for nearly five millennia, and researchers have long wondered to what extent these ancient organisms undergo senescence, physically deteriorating as they age. A recent paper studying ginkgoes, ...

Scientists poke a hole in the age of trees

Some of Britain's most majestic ancient trees are probably not as ancient as we previously thought, one of the country's leading tree-ageing experts has suggested.

Climate change is giving old trees a growth spurt

Larch trees in the permafrost forests of northeastern China—the northernmost tree species on Earth—are growing faster as a result of climate change, according to new research.

Group clones California giant trees to combat climate change

At the foot of a giant sequoia in California's Sierra Nevada, two arborists stepped into harnesses then inched up ropes more than 20 stories into the dizzying canopy of a tree that survived thousands of years, enduring drought, ...