Waterproof glue seals holes in beating hearts

Next time you catch a slug meandering its way across your prize lettuces, think about this: that slimy trail could be the key to life-saving technology for healing damaged tissue, such as in beating hearts.Inspired by creatures that secrete sticky substances with unique water-repelling, adhesive properties, researchers in the US have developed a type of glue that they hope one day will replace sutures and staples and keep beating hearts securely sealed following invasive surgery.