Matt Damon is refusing to go to the bathroom until everyone in the world has access to one. Of course, he has gone to the loo since this speech, but he's making a good point! Read more about SA's water crisis.
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Many people in a large number of low and middle income countries now experience a 'double burden' of malnutrition.
A study indicates that smokers who switch to e-cigarettes reduce their exposure to cancer-causing chemicals.