How GM Invented Planned Obsolescence It all started with a struggling auto company in the 20s.

Learn more about the world's oldest living trees and how they've survived human development.

Deciduous trees have unique autumn leaf colors that are specific to every species. Fall's most common leaf colors are red, yellow, and orange.

Hardwood Trees: Identifying the Most Common Species Use leaves, fruit, and flowers to identify types of hardwood trees.

Figs are sweet, edible fruits often sold by themselves, in jams, or as a base for desserts, and they're pollinated by wasps—not bees. Perhaps you're hesitant to purchase figs after hearing the ...

There are 145 National Forests in 41 states in the United States. Discover each of them, state-by-state.

Albatrosses can soar at high speeds for up to eight hours without even moving their wings. Learn more about these amazing birds and how to help them.

Sexual dimorphism manifests in many fascinating ways throughout the animal kingdom—from orangutans to peafowls and more.

Textiles are recyclable. Here's some important info on how to recycle your old clothes, sheets, towels, and more—plus, smart and eco-friendly ways to repurpose them.

From Apple's Spaceship HQ to GE's Boston campus, these solar-integrated designs are raising the bar.

This massive stretch of forest plays a significant role in the planet's biodiversity and even its climate.

Are Zoos Ethical? Arguments for and Against Keeping Animals in Zoos Zoos, if done right, could be a good thing for the animals and the public—yet many so-called zoos get it terribly wrong.