In 1977, during the heyday of the emerging “alternative energy” movement, I attended a solar greenhouse conference where I remember one of our little tribe’s pioneers opined about how much less exciting the solar “revolution” was going to be when it finally went mainstream. “I know what’s going to happen,” architect Steve Baer of Zomeworks pronounced – “solar collectors are going to be advertised in Sears newspaper inserts! I’m going to hate it but I’ll know we have arrived.”

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A simple colour-changing test to detect fluoride in drinking water, devised by researchers at the University of Bath, could in the future prevent the crippling bone disease, skeletal fluorosis, in developing countries such as India and Tanzania.

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An international team of scientists, led by British Antarctic Survey (BAS), has produced a new map showing how much heat from the Earth’s interior is reaching the base of the Antarctic Ice Sheet. The map is published this week (Monday 13 November) in the journal Geophysical Research Letters.

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