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 ...

A study found that redwood trees have two different leaves that serve different functions. The peripheral leaf, left, focuses on photosynthesis while the axial leaf is devoted to absorbing water.

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 ...