Disposable diapers are good for time-strapped parents but bad for the environment, clogging up landfills and taking years to biodegrade. Now the first nappies to be fully degradable are set to hit supermarkets in Australia and New Zealand. Developed by SeNevens International of Como, Western Australia, they contain an absorbent felted 鈥渇luff鈥� derived from eucalyptus trees and a leak-proof layer made from oil-based gel mixed with cornstarch instead of plastic. They biodegrade in six months.
Touch screens and touch pads usually use conductive and resistive layers to track your finger鈥檚 position. Now researchers at the Polytechnic University of Milan in Italy have a way of using vibrations instead. Microphones at the edges of a surface pinpoint where it is touched by measuring how long it takes vibrations to reach each one.
