In this issue…

Open for Discussion: Plastic, Hello Edible Wrappers—or Nothing at all!

Have you ever considered eating your food wrappings? Now, it is possible, and it is a nice way to protect the environment.

In the Fog about Smog: Solving the Smog Puzzle on Earth and from Space

In the middle of World War II, Los Angeles residents woke up thinking that their city was under attack. A thick fog had blanketed the city and caused people’s eyes to sting and their noses to run. What caused that smog and what did we learn from it?
Teacher’s Guide

Ozone: Our Global Sunscreen

Miles above the surface of the Earth, a thin layer of ozone gas acts as a shield that protects us from harmful ultraviolet light. But chemicals released in the atmosphere have caused a huge hole in the ozone layer above Antarctica.
Teacher’s Guide

Available in the print issue:

• Living with an Artificial Bladder
  Luke Massella was born with a defective bladder, but thanks to a new technique that used his own cells, an artificial bladder was grown in the laboratory and implanted in his body.
  Teacher’s Guide
• Barbecue: The Chemistry Is in the Heat!
  Grilling meat over a barbecue involves several chemical reactions that
  contribute to the typical smell and aromas of barbecue.
  Teacher’s Guide
• Not Milk? Living with Lactose Intolerance
  People with lactose intolerance cannot consume dairy products because they lack a protein called lactase. How does this protein work and what can lactose-intolerant people consume instead of dairy products?
  Teacher’s Guide

>>Correlations to National Science Education Standards

Video

Episode 12: How NASA Keeps Tabs of Air Pollution from Space

Download video: MP4 or AVI (Zip files)

>>more videos

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