The size of leaves can vary by a factor of 1,000 across plant species; until now, the reason why has remained a mystery. A new study by an international team of scientists goes a long way toward ...

Hundreds of feet above the ground, atop a giant sequoia tree, as many as 2 billion leaves vie for resources. Twigs teem with leaves growing long and splayed or short and tight, depending on their ...

The giant sequoia is the most massive non-fungal organism on Earth. It's size is possible in part because its leaves are responsive to environmental changes. Hundreds of feet above the ground, atop a ...

As many as 2 billion leaves on a sequoia vie for resources. Established leaves that live for up to 20 years draw water up the tree's trunk and send nutrients down, while the trunk amasses wood and ...