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Countries That Start With 'O'
history.howstuffworks.com/world-history/countries-that-start-with-o.htm
Former countries that start with "O" include Orange Free State and Oldenburg but these states have since dissolved. There is now one remaining holdout between Asia and Africa: the Sultanate of Oman.
What chemical elements are needed for plant growth?
home.howstuffworks.com/chemical-elements-needed-for-plant-growth.htm
Certain chemical elements, including potassium, phosphorus and nitrogen, are needed by every plant. You can learn more about the chemical elements that are needed for plant growth from this article.
Is a Seahorse a Fish?
animals.howstuffworks.com/fish/is-a-seahorse-a-fish.htm
Is a seahorse a fish? Yes, despite their oddball appearances, seahorses are indeed fish. They belong to the genus Hippocampus and are classified within the Syngnathidae family, which also includes pipefish and sea dragons.
The D-Day Invasion: January 1944-July 1944
history.howstuffworks.com/world-war-ii/d-day-invasion.htm
This World War II timeline highlights key events from January 1944 through July 1944. Follow the events of World War II, including the D-Day invasion.
How Bearings Work
science.howstuffworks.com/transport/engines-equipment/bearing.htm
Bearings are the invisible heroes inside many mechanical devices. Learn about all different kinds of bearings, including 5-foot ball bearings that keep buildings on solid footing.
5 Skin Problems You Can Get From Your Pets
health.howstuffworks.com/skin-care/problems/medical/5-skin-problems-from-pets.htm
Skin problems you can get from your pets include bacteria, fungi and bugs. Learn about skin problems you can get from your pets.
1956 Ford F-100 Pickup
auto.howstuffworks.com/1956-ford-f-100-pickup.htm
The 1956 Ford F-100 pickup truck had it all -- power, safety, and style. Get the low-down on the classic 1956 Ford F-100 pickup, including pictures.
17 Obscure Brands of Soda Pop
recipes.howstuffworks.com/17-obscure-brands-of-soda-pop.htm
These days, soda pop is more than just cola and lemon-lime. See our list of 17 obscure brands of soda pop, including Pickle Juice 'Sport' and Orbitz.
What Is a Wolfpack Mentality?
animals.howstuffworks.com/mammals/wolf-pack-mentality.htm
"How To Train Your Dragon," "What We Do in the Shadows" and tons of other movies include references to wolf packs. Learn how those actually work in the real world.
What grade of steel was used in the World Trade Center?
science.howstuffworks.com/engineering/structural/grade-of-steel-used-in-world-trade-center.htm
The materials used to build the World Trade Center's twin towers have been heavily scrutinized since the 9/11 terrorist attacks -- including the steel that formed the frames of the skyscrapers.