India, April 13 -- NASA has posed a new challenge for innovators around the world by offering $3 million to anyone who can come up with a technology to help recycle human waste in space.

The LunaRecycle Challenge is inviting innovators who can develop technology that will help the agency in recycling astronauts' feces and urine on long-duration space flights and even Mars, Moon missions.

"NASA is committed to sustainable space exploration. As we prepare for future human space missions, there will be a need to consider how various waste streams, including solid waste, can be minimized-as well as how waste can be stored, processed, and recycled in a space environment so that little or no waste will need to be returned to Earth," the agenc...