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Why Were So Many Prehistoric Animals So Big?
animals.howstuffworks.com/extinct-animals/why-were-prehistoric-animals-big.htm
A lot of prehistoric animals were massive, but do we really know why? And is there a larger animal roaming the planet today?
Cardio vs. Weight Training
health.howstuffworks.com/wellness/diet-fitness/exercise/cardio-vs-weight-training.htm
Is cardio or weight training a more healthful form of exercise? Learn about cardio and weight training at Discovery Health.
Does Your Body Really Replace Itself Every Seven Years?
science.howstuffworks.com/life/cellular-microscopic/does-body-really-replace-seven-years.htm
Your body replaces billions (with a b!) of cells every day. In about 100 days, 30 trillion be replaced, but does that mean you're a new person, too?
Can You Pass a Scuba Diving Certification Quiz?
play.howstuffworks.com/quiz/can-you-pass-a-scuba-diving-certification-quiz
Scuba diving: It's the passport to a gorgeous underwater world ... but it's not very forgiving of the careless or the reckless! Think you could pass a diver certification quiz? Find out now with our quiz!
How does BHT work in skin cleansers?
health.howstuffworks.com/skin-care/cleansing/products/bht-in-skin-cleansers.htm
How does BHT work in skin cleansers? Find out how BHT works in skin cleansers at HowStuffWorks.
7 Animals that Can Be Heard for Long Distances
animals.howstuffworks.com/animal-facts/7-animals-that-can-be-heard-for-long-distances.htm
You think cell phone users are loud? Some of these animals can be heard for miles. See our list of 7 animals that can be heard for long distances.
What if GERD symptoms aren't treated?
health.howstuffworks.com/diseases-conditions/digestive/untreated-gerd-symptoms.htm
Looking for facts about GERD? Learn about seeing your doctor about GERD from Discovery Health.
Which Is It: Prescription Drug or Tolkien Elf?
play.howstuffworks.com/quiz/drug-or-tolkien-elf-quiz
Can you spot the prescription drug names among Elf names from J.R.R. Tolkien's legendarium? Test your Elven race IQ with this HowStuffWorks quiz.
Health Issues for Women Ages 55 And Older
health.howstuffworks.com/wellness/women/general/health-issues-for-women-ages-55-and-older.htm
Be aware of health issues for women ages 55 and older to maintain your health. Learn about health issues for women ages 55 and older.
Horned Frog: A Snake-eating Ambush Predator With Tiny Teeth
animals.howstuffworks.com/amphibians/horned-frog.htm
The horned frog (also called the horned toad or ornate horned frog) belongs to the genus Ceratophrys, a group of amphibians native to South America.