The Strange Spin of Uranus
Directional terms like north and south make sense here on Earth. The north and south axis of the Earth is relatively perpendicular to the plane of the Earth's orbit around the sun. Actually, Earth's axis of rotation is 23.5 degrees from the vertical. The…
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Medicine
The Plague
Plague is an infectious disease caused by the bacterium Yersinia pestis. The bacterium is found mainly in…
Geology
Igneous Rocks, Born of Fire
Rocks are naturally occurring solid mixtures of substances primarily made of minerals. There are three kinds…
Astronomy
The Sun’s Corona
The White-Light Corona - The Corona is the Sun's outer atmosphere. It is visible during total eclipses of the…
Biology
Will That Be One Hump or Two?
Camels are highly adaptive to their environments. Often called the ships of the desert, they have been…