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 ...

The tallest trees in the world continue to offer insights to scientists, with a new study revealing that redwoods have functionally distinct leaves that allow them to thrive in both wet and dry areas.

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 ...

Mowing, blowing, raking, mulching, vacuuming, composting, leaving intact — leaf-removal choices could make your head spin. What if you could determine the best removal method for every kind of fall ...

Plant diseases limit the output of agricultural workers and cause hundreds of billions of dollars in global crop production loss each year. When plants get wet they are at risk of contracting diseases ...

Evolution has long been viewed as a rather random process, with the traits of species shaped by chance mutations and environmental events -- and therefore largely unpredictable. But an international ...

The ubiquitous carpet of fallen leaves outside our windows, often seen as a seasonal chore, holds a surprising secret for gardeners. Far from being mere waste, this natural bounty can be transformed ...

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 ...