Almost all organisms are ruled by the day/night cycle of Earth. In humans, and many other mammals and birds, this is dominated by periods of wakefulness and sleep. But what about trees? They too work ...

Sycamore trees, more than 100 years old, tower above the yard and house where Grant Wood once lived. Do you ever wonder how trees — stripped of their leaves, exposed to whipping winds, extreme cold, ...

We have all watched fruit trees grow and change through the seasons. Fruit and nut trees grow most rapidly in the spring and summer months. As summer progresses, the growth rate slows until it all but ...

Sleeping under a tree may seem peaceful, but it can pose health risks at night. While trees release oxygen during the day, they emit carbon dioxide at night due to respiration. This can lead to ...