Most people are familiar with ink-jet printing. But a team of chemists from Jilin University has attracted worldwide attention by inventing a water-jet printer.

Like any printer, the machine takes a blank page and covers it with print. But instead of ink, it uses water.

Although this means the text will fade within 22 hours of being printed, Zhang Xiao'an, professor and leader of the team, said that 40 percent of printed pages are thrown away after being read only once anyway.