Deep ice cores show greenhouse gases are highest for 800 000 yearsIn a paper published in Nature in May, a team of researchers reported that greenhouse gases are at higher levels in the atmosphere than at any time in at least 800 000 years, during which time the earth has experienced eight ice ages and inter-glacial periods.
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Dry Times
Deserts can teach us new ways to live, manage scarce resources, cope with a harsh climate, isolation and a lack of water and energy.
