The Roman ruler Julius Caesar

The Roman ruler Julius Caesar (100 B.C. – 44 B.C.) used a very simple cipher for secret communication. He substituted each letter...

Albert Einstein

Albert Einstein was a German theoretical physicist who developed the theory of general relativity. He is generally considered the most inf...

sir Isaac newton

Isaac Newton is well known as one of the greatest scientists who ever lived. Less well known is his deep belief in God and his conviction ...

Edmund Halley and His Comet

Edmond Halley is famous for his works as an astrologer and he was the first astrologer who calculated a comet's orbit. He ...

Christopher Columbus

Christopher Columbus (1451- 1506) was a Genoese navigator and explorer. In the late fifteenth century, Columbus believed that it...

Tahiti

Tahiti  is the largest island in the Windward group of French Polynesia, located in the archipelago of the Society Islands in the sout...

Loggerhead

The most common sea turtle in Florida, the loggerhead is named for its massive, block-like head. Loggerheads are among the larger se...

Alpacas are a domesticated species

The earliest evidence for domestication of both llama and alpaca comes from archaeological sites located in the Puna region of the Per...

Svartifoss, Iceland.

Svartifoss (Black Fall) waterfall with its basalt columns in   Skaftafell, Vatnajökull National Park, Iceland. The basalt hexagona...