<p>The overland telegraph connecting Australia to the world was completed just over 150 years ago. It was built due to the dedication of a public servant, Charles Todd.</p>

The overland telegraph connecting Australia to the world was completed just over 150 years ago. It was built due to the dedication of a public servant, Charles Todd.

Celebrating Charles Todd and the overland telegraph

The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

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The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

The Science Show&nbsp;gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

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Celebrating Charles Todd and the overland telegraph

Celebrating Charles Todd and the overland telegraph