Oak trees have lots of visitors ... An animation illustrating the different stages in plant development. The life cycle of a dandelion. videoThe life cycle of a dandelion A look at the life ...

Mountain pine beetle has a one-year life cycle in Colorado. In summer, adults leave the dead, yellow- to red-needled trees in which they developed. In general, females seek out large-diameter ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Trees depicted in ...