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5 Ideas for Experiments on Conserving Energy
science.howstuffworks.com/environmental/conservation/5-experiments-conserving-energy.htm
About 70 percent of our energy comes from non-renewable sources like oil and natural gas. When they're gone, they're gone for good. Learn some simple ways to conserve energy through these five simple experiments.
Balneotherapy Overview
health.howstuffworks.com/skin-care/beauty/skin-treatments/balneotherapy.htm
Balneotherapy, or the therapeutic use of water, is a safe and time-tested treatment. Learn about uses and history of balneotherapy.
Is the brain hardwired for religion?
science.howstuffworks.com/life/inside-the-mind/human-brain/brain-religion.htm
Is the brain hardwired for religion? Proponents of neurotheology think it may be. Learn how science is figuring out if the brain is hardwired for religion.
Can You ID These WWII Planes in Under 7 Minutes?
play.howstuffworks.com/quiz/can-you-id-these-wwii-planes-in-under-7-minutes
Aviation history was made during the Second World War when aerial combat proved itself to be critical to warfare. Tens of thousands of planes took to the skies and made history. Think you can name them all? Strap in and show us what you got!
Is there really water on Mars?
science.howstuffworks.com/water-on-mars.htm
Photographs have recently shown that there may be water on Mars. Find out if there's water on Mars and what that could mean for life on Mars.
How Carbon Offsets Work
science.howstuffworks.com/environmental/green-science/carbon-offset.htm
Carbon offsets are a form of trade that funds projects that reduce greenhouse gas emissions. Learn about carbon offsets and carbon offset programs.
How Bug Spray Works
home.howstuffworks.com/home-improvement/household-hints-tips/insect-control/bug-spray.htm
Our world is full of insects, and our first response to seeing one is usually to reach for a can of spray to zap it. Is this good idea? What's in your typical can of bug spray? And, could it harm you, too?
5 Futurist Predictions in the World of Health
electronics.howstuffworks.com/future-tech/5-futurist-health-predictions.htm
Predictions in the world of health can be all over the place. However, these five futurist predictions have some educated guesses on the future of health.
How Drought Works
science.howstuffworks.com/nature/natural-disasters/drought.htm
What happens when the rains cease and water levels dry up precipitously? Everything from abundant grasses to apex predators suffers the consequences.
10 Reasons People Start Smoking
health.howstuffworks.com/wellness/smoking-cessation/10-reasons-people-start-smoking.htm
Do you know the reasons people start smoking? See our list of the 10 most common reasons people start smoking at HowStuffWorks.