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Practice 9-1

The history of the tortoise

If you go back far enough, everything lived in the sea. At various points in evolutionary history, enterprising individuals within many different animal groups moved out onto the land, sometimes even to the most parched deserts, taking their own private seawater with them in blood and cellular fluids. In addition to… Read More »The history of the tortoise

Is there anybody out there?

The Search for Extra-terrestrial Intelligence The question of whether we are alone in the Universe has haunted humanity for centuries, but we may now stand poised on the brink of the answer to that question, as we search for radio signals from other intelligent civilisations. This search, often known… Read More »Is there anybody out there?

William Henry Perkin

The man who invented synthetic dyes William Henry Perkin was born on March 12,1838, in London, England.  As a boy, Perkin’s curiosity prompted early interests in the arts, sciences, photography, and engineering. But it was a chance stumbling upon a run-down, yet functional, laboratory in his late grandfather’s home… Read More »William Henry Perkin

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