F or more than 80 per cent of time, Earth has been a warm wet greenhouse planet with no ice. We live in unusual times, when ice occurs on continents. This did not happen overnight. The great southern continent, Gondwanaland, formed about 550 million years ago. It occupied 20 per cent of the area of our planet and included Antarctica, South America, Australia, South Africa and the Indian subcontinent.
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Emeritus Professor Ian Plimer’s latest book Green Murder (Connor Court Publishing) shows he has an aversion to ice, except in aqua vitae.
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