Stars With Long Hair
Throughout history, people have been both awed and alarmed by comets, stars with 'long hair' that appeared in the sky unannounced and unpredictably. We now know that comets are dirty-ice leftovers from the formation of our solar system around 4.6 billion years…
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Biology
The Razor-sharp Surgeonfish
As any diver can tell you, the waters under the sea can be beautiful and dangerous. The oceans are full of…
Engineering
Ants Are Wimpy
It's common knowledge that ants can lift many times their own weight. We are frequently told they can lift 10,…
Physics
Quarks
Quarks are the most fundamental particles that we know of. Both protons and neutrons are made of quarks. We…
Biology
Beware -- Red Tide!
Red tides occur in oceans. They are not caused by herbicides or pollutants, but by a microscopic alga. Karenia…