Bacteria-Killing Straw.

Danish inventor Torben Vestergaard Frandsen created a straw with filters and an iodine-impregnated chamber to remove bacteria from water as it is drunk.

Mr Mortensen said that using the straw, it would be possible even to drink water from the notoriously polluted Thames river in London.

"You'd definitely have a bacteria-free drink," he said.

"You might still taste some of the algae, but you could do it, no problem."

Link | Lifestraw Website