Oh, lettuce. It beefs up salads and adds a final healthy flourish to your plate. But honestly, it can get a little boring. So I’m making a case for putting a little more thought into your leaves.

Add Yahoo as a preferred source to see more of our stories on Google. For broad-leaved trees like the holm oak, which grows in Mediterranean climates with dry summers and rainy winters, this seasonal ...

Redwood trees have two types of leaves, one to make food and the other to absorb water, found a new study. It's the first study to estimate whole-crown water absorption in a large, mature tree. The ...

Redwoods are among the most well-studied trees on the planet, and yet their mysteries continue to surprise and delight scientists and nature lovers. Scientists from the University of California, Davis ...