A hospital's new robots are running errands for nurses and can replace the work of up to four people each. The eight robots, all called Noah, move around a hospital in China carrying documents, medicine and surgical equipment weighing up to 330kg (650lbs). Using GPS technology, a Noah bot is able to navigate the hospital's complex wings with ease and can carry ten times as much as one human staff member. The intelligent Noah bots are programmed with phrases such as'Here I go!', 'I'm entering the lift!' and'I've been obstructed!' to notify their human colleagues throughout the day. Using GPS technology, a Noah bot is able to navigate the hospital's complex wings with ease and can carry 10 times as much as one human staff member.