Water safety is a big deal, especially when it comes to nerve agents. These nasty chemicals can easily be slipped into water supplies, making it crucial to have a quick and reliable way to detect them. Enter the shamrock-like electrochemical biosensor, a compact and portable gadget designed to monitor water on the fly. This isn't your average water tester. It's a hig...

The body's tissues are built tough, thanks to collagen. Collagen fibers run in specific directions, giving tissues their strength and stability. Scientists have been trying to copy this design. They have had a hard time making models that match the size and direction of natural tissues. Now, a breakthrough has been made. Scientists created new collagen tissues. ...