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Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Colorful winter sunset

What's the Difference Between a Solstice and an Equinox?

Panama Canal infographic

Timeline and Map of the Panama Canal

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

spine

epidermal anatomy

Learn about this topic in these articles:

echidnas

In echidna
…a dome-shaped body covered in spines. Echidnas have beady eyes and mere slits for ears, and at the end of their beaks are two small nares (or nostrils) and a tiny mouth. Electroreceptors in the skin of the beak may sense electrical signals produced by the muscles of invertebrate prey.…
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