A new study shows male zebra finches must sing every day to keep their vocal muscles in shape. Females prefer the songs of males that did their daily vocal workout. Why do songbirds sing so much? Well ...

Engineers at MIT have devised an ingenious new way to produce artificial muscles for soft robots that can flex in more than one direction, similar to the complex muscles in the human body. The team ...

Future robots could soon have a lot more muscle power. Northwestern University engineers have developed a soft artificial muscle, paving the way for untethered animal- and human-scale robots. The new ...