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The Dirty Truth About How Often You Need Your Oil Changed
auto.howstuffworks.com/under-the-hood/vehicle-maintenance/dirty-truth-about-oil-changes.htm
How often should you change your oil? If you think it's every 3,000 miles, think again.
What are chilblains?
health.howstuffworks.com/skin-care/problems/medical/chilblains.htm
Chilblains is a cold-weather skin condition that makes your fingers and toes redden and swell. Learn how you can prevent chilblains.
What are the dangers of mercury exposure?
home.howstuffworks.com/home-improvement/household-safety/dangers-of-mercury-exposure.htm
What are the dangers of mercury exposure? Find out the dangers of mercury exposure, how to avoid them and how to tell if you've been exposed.
Reflexology: Bogus, Beneficial or a Bit of Both?
health.howstuffworks.com/wellness/spa-health/reflexology.htm
The ancient art of reflexology focuses on pressure points exclusively on hands and feet. HowStuffWorks looks at whether it really relieves stress.
Peyote Is Endangered, Spiritually Sacred and Becoming Legal
science.howstuffworks.com/peyote.htm
Long-banned in the U.S., except for religious purposes, peyote is starting to be decriminalized in some cities. But is that a good thing for this endangered plant?
Jackals: Canine Survivors and Tricksters of Folklore
animals.howstuffworks.com/mammals/jackals.htm
Jackals are adaptable and wily, survivalists to the core. HowStuffWorks looks at these formidable canines.
Scurvy: The Scourge of the High Seas Remains at Large Today
health.howstuffworks.com/diseases-conditions/rare/scurvy.htm
HowStuffworks looks at the symptoms and treatment of scurvy and why it was so associated with sailors and pirates.
Man-made Islands Are More Common Than You Think
science.howstuffworks.com/engineering/structural/man-made-islands.htm
Man has been building islands all over the world for centuries using extraordinary feats of engineering. But at what cost to the environment?
Chloroplasts Are the Plant Cells That Manufacture Energy
science.howstuffworks.com/life/cellular-microscopic/chloroplasts.htm
Chloroplasts are where some of the most miraculous chemistry on Earth goes down.
How Do Ventilators Work? Why Are They So Critical for the COVID-19 Pandemic?
health.howstuffworks.com/medicine/modern-technology/ventilators.htm
Ventilators are a critical piece of equipment for coping with the COVID-19 pandemic, but how do they work?