Bacteria

Lindsay France / Cornell University Photography

A group of researchers at Cornell University has developed a new, faster test to determine whether bacteria are present in beach water. The team will be field-testing their system on Lake Erie near Buffalo July 16-18.

Taylor Mann / CleanSlate UV

When the cell phone you hold in your hand and press against your face is at least six times dirtier than the average toilet seat, it begs the question: Is it safe to use in a hospital? The answer: Not so much. A winner of New York’s 43North competition is out to change that, and they’re finding more uses for their product than originally planned.