Cloud genera are divided into species to account for their particular shape and internal structure. Certain species only ...

What are the tallest trees in the world? These 10 skyscraping superstars are some of the stalwart examples of their species.

Electric cars hybrids rely upon electric motors for propulsion and assistance. Here is a look at how these motors and generators work to generate power.

There are pros and cons to both wind turbines and solar panels for home energy generation—which is best for you depends on a multitude of factors.

Here we look at the different types of glass, how to recycle them, what glass products are not recyclable, and the many benefits of giving new life to old glass.

Your recycling bin can be a great source of materials for making your own seed starting pots.

13 Animals Hunted to Extinction Whether it's for meat, fur, sport, or fear, numerous species have been wiped out.

If you'd like to donate to a reputable wildlife conservation organization, here's a list of the 10 best from Oceana to World Wildlife Fund and more.

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.

While some people benefit from overtourism, the threat that large crowds pose to many travel destinations could cause irreparable harm.

Explore key issues and ideas in urban design and planning, including bike infrastructure, Vision Zero, walkability, density, and more.

Goats are resourceful eaters, they hate the rain, and they have interesting facial hair. Discover more facts about these gentle backyard lawnmowers.