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How Your Immune System Works
health.howstuffworks.com/human-body/systems/immune/immune-system.htm
Inside your body there is a mechanism designed to defend you from millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. Find out how the human immune system works.
A Guide to Home Safety
home.howstuffworks.com/home-improvement/household-safety/a-guide-to-home-safety.htm
Home safety is an important issue. Learn valuable safety precautions that will reduce the risk of an injury or death occurring in your home.
Knee Replacement Overview
health.howstuffworks.com/medicine/surgeries-procedures/knee-replacement.htm
Getting a knee replacement is often a last resort for those whose knees are destroyed by arthritis or wear and tear. Learn about knee replacements.
How a Marathon Works
entertainment.howstuffworks.com/marathon.htm
Marathons are 26.2 miles in length and have been known to cause death. Find out what marathons are all about and why anyone would run one.
How Crime Scene Investigation Works
science.howstuffworks.com/csi.htm
Learn what really goes on when a CSI "processes a crime scene" and get a real-world view of crime scene investigation from a primary scene responder with the Colorado Bureau of Investigation.
How Dreams Work
science.howstuffworks.com/life/inside-the-mind/human-brain/dream.htm
Dreams combine verbal, visual and emotional stimuli into mystifying storylines. Learn about dreams, the meaning of common dreams, REM and controlling dreams.
Buildup to World War II: January 1931-August 1939
history.howstuffworks.com/world-war-ii/buildup-to-world-war-2.htm
This World War II timeline highlights important dates during January 1931 to August 1939. Follow the events of World War II and the German invasion.