METHUSELAH AMONG TREES

How old could the oldest living tree be? Could it be 300 years? Or maybe 1000 years? The more biologists study our planet, the older trees they discover which push this limit ever further. Until recently, the tree in the photo, the Methuselah tree (Pinus Longaeva) allegedly 4849 years old, thriving in California mountain area, …

WHY DO LEAVES TURN YELLOW?

There is no more ordinary or inevitable occurrence than autumn leaves falling. However, have you asked yourself why this happens? And why? During spring and summer, plants feel nice; they have enough light and food. Leaves are full of chlorophyll which absorbs sunlight and assists in the transformation of carbon dioxide and water into food. …