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The Man Whose Blood Saved More Than 2 Million Babies
James Harrison produces a rare antibody in his blood called RhD immunoglobulin that's saved millions of Australian babies. Read more at HowStuffWorks.
1940 Packard One Twenty
auto.howstuffworks.com/1940-packard-one-twenty.htm
The 1940 Packard One Twenty club sedan is a rare collectible due to low pre-World War II production. Explore features of the 1940 Packard One Twenty.
9 Blue Butterfly Species You Won't Believe Are Real
animals.howstuffworks.com/insects/blue-butterfly.htm
Some of the most dazzling insects in the world are blue butterflies. With their iridescent wings and delicate forms, these rare beauties bring color to grasslands, coastal areas and conservation efforts alike.
How Sword Making Works
science.howstuffworks.com/sword-making.htm
The centuries-old art of sword making involves incredibly intricate metal work, and it's still being practiced today. Get a rare glimpse into the creation of this ancient weaponry.
5 Awesome Antique Tractors
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These 5 awesome antique tractors aren't like the mass-produced tractors you see today. Check out these rare antique tractors at HowStuffWorks.
What's the Difference Between a Blood Moon and a Lunar Eclipse?
science.howstuffworks.com/blood-moon.htm
Blood moons always bring out the stargazers though they aren't that rare. So what makes blood moons red? And do they differ from lunar eclipses?
1947-1954 Nash Model 3148
auto.howstuffworks.com/1947-1954-nash-model-3148.htm
The 1947-1954 Nash Model 3148 truck was an export model, but some stayed in the U.S. See pictures and learn about the rare 1947-1954 Nash Model 3148.
9 Brown Cats From Siamese Chocolate Point to Havana Brown
animals.howstuffworks.com/pets/brown-cats.htm
Brown cats are relatively rare, rich in color, and surprisingly varied. These cats range from light tan to deep dark brown, offering pet lovers plenty of warm brown options.
What Is Rust?
science.howstuffworks.com/question445.htm
Rust is the common name for iron oxide, which is created when iron bonds with oxygen. In fact, pure iron is only rarely found in nature because it interacts with oxygen so easily.
Highlander Cat: A New Breed Mixing Jungle Curl and Desert Lynx
animals.howstuffworks.com/pets/highlander-cat.htm
Big cat looks with a housecat heart? That’s the Highlander cat, a rare breed that stands out thanks to its curled ears, naturally short tail and strong resemblance to wild cats.