These six spectacular sacred stones from the stars illustrate the influence these astronomical visitors have had on humanity down through history.

From past (venomous dinosaurs) to present (venomous jellyfish) to future (venom treatments), the evolution, dangers and benefits of venom continue to surprise.

What if there were a building material 7 times stronger than concrete that's not only carbon neutral but carbon negative? That material is here, and it's hemp.

Nature is amazing with the emotions she can invoke, from excitement to relaxation. So kick back and relax with these 26 soothing water on the rocks photos.

The planet's population is growing like crazy, and we have limited space. Where will we grow our food when residential areas take over? In the sky, of course.

Mundane subjects like feathers, human taste buds and a drop of pond water become utterly fascinating and even beautiful when photographed with microscopes.

From insects and brain size to genetically-altered mice and Alzheimer's to sea lions and toxic brain damage, these animals help educate about the brain.

The global shortage of safe water is a deepening problem. This project's goal is to purify Europe's largest rivers and provide education on water conservation.

Using 25 of a cat whisperer's extraordinary images, here are 10 large cats we might not normally get close enough to say, here kitty kitty, smile for the camera.

Backyard gardens are great when you have the space, but rooftop and wall gardens are perfect when you don't. They can even help businesses lower utility costs!

Size DOES matter: These 9 amazing animals prove that when the going gets tough, the tough get big!

The world's largest public gardens, greenhouses, zoos and natural history museums offer plenty of space to stretch out and learn about nature.

Living organisms continue to amaze in the form of recent bizarre discoveries surrounding lungless worms, lonely bacteria and coconut-crazy octopuses.

Now is the time to start planning for spring and summer vacations. These eco-travel links will help you travel a little lighter on the earth this year.

Somewhere between Singapore's commercial center and the coast lies a thrilling 120-foot tall walkway through the treetops. It's a treaty between man and nature.