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Satellite images reveal global poverty

It can be difficult to make a global assessment of poverty and poor economic conditions, but with satellite images, researchers are now able to give us a very good hint of the living conditions of populations in the world's poor…

What does 'dead' mean?

Credit: Brainscape 17, by Susan Aldworth, 2006, etching and aquatint, 30 x 25 cms. Private collection/Bridgeman Images Should death be defined in strictly biological terms -- as the body's failure to maintain integrated functioning of…