Branching out for safer water

A new study taps a surprisingly simple, cheap and renewable resource for filtering water

By Beth Geiger, 13:54 PM March 12, 2014

Can a tree branch save lives? Maybe, according to a new study. Certain types of wood, it finds, can filter harmful bacteria from drinking water.


Globally, illnesses caused by tainted water kill more than 2 million people each year. Most are children. The problem is especially grave in poor, developing countries where safe, clean water isn’t piped into homes as it is in the United States. Filtering and treatment systems can work well. But such systems can be expensive, complex or difficult to ...

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