A clean bag of water
19 June 2015, 18:00 PM
It weighs no more than 300 grams, fits easily into a backpack and looks like any other plastic bag.
19 June 2015, 18:00 PM
Girls today, pioneers in Stem tomorrow.
19 June 2015, 18:00 PM
The Straits Times, Singapore
19 June 2015, 18:00 PM