MNN week in review montage

Our picks for the week of July 31-Aug. 6: 

• Sometimes before a storm arrives, or sometimes out of the blue, rare "roll clouds" like the one above command attention as they float ominously overhead. Here are nine striking roll cloud photos — plus an explanation of what they are and why they're so cool. 

• The eyes at the top of this story belong to a loris rescued in China. See more amazing faces in the July month in animals.

• MNN's Siel Ju goes behind the scenes of a Target commercial to learn how EcoSet makes a green commercial.

• Shark Week is winding down, but we've got a few thrills left. Here are seven hot spots for cage-diving.

• There are small towns, and then there are tiny towns. Check out 12 places where your visit could double the population.

cool dog treats• Want to help your dog beat the heat? Here are 20 creative, safe and cool treats you can make for your pooch.

• Matt Hickman, expert on all things home, spells out the difference between biodynamic and organic wines.

• These 20 impressive science fair projects are proof that you don't have to be an adult to have amazing, world-changing ideas about science.

• A cake controversy in New Jersey raises a question that any local business-loving person can appreciate: Where do you draw the line on supporting local businesses?

• If you're trying to add more veggies to your diet, we're here to help. Here are five simple ways to cook veggies.

Plus: Don't forget to check out the week in photos. (Can you identify what's in the photo below?)

MNN's week in review: Fascinating roll clouds, cage-diving hot spots and more
Here are the best environmental stories from Mother Nature Network for this week.