Few know where the oldest tree in the world is – the Forest Service doesn't reveal the exact location to protect it. Here's ...

A new study from Umeå University has revealed that trees' circadian clocks guide their growth and the timing of seasonal events like the appearance of leaves in spring. The researchers investigated ...

The oldest known is the Methuselah Tree, over 4,600 years and still growing. U.S. Forest Service policy is to protect the anonymity of the individual tree as a safeguard against thoughtless ...

In case you're wondering, the tree shown in the NOVA program is not the Methuselah Tree. To protect this venerable old tree, the U.S. Forest Service refuses to give its location or identity within ...