Rio Tinto profits drop in line with rivals

A depressed aluminum market dragged down first-half earnings at Rio Tinto, the global mining company, which paid no interim dividend in order to husband cash and cope with $39 billion in net debt. Rio, fresh from a $15.2 billion rights issue, recorded a $206 million loss before interest, tax, depreciation and amortization at its Rio Tinto Alcan aluminum unit, compared with an ebitda gain of $2.38 billion in the first half of 2008

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Ancient microbes discovered alive beneath Antarctic glacier

Beneath an Antarctic glacier in a cold, airless pool that never sees the sun seems like an unusual place to search for life. But under the Taylor Glacier on the East Antarctic Ice Sheet, near a place called Blood Falls, scientists have discovered a time capsule of bacterial activity. At chilling temperatures, with no oxygen or sunlight, these newly found microbes have survived for the past 1.5 million years using an “iron-breathing” technique, which may show how life could exist on other planets

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