RT @SBS_Science: This teen has invented a sprinkler that knows when plants need more water. https://t.co/xr2KltjLZg @UNSWnews 0 atbildes

	Signe Dean (2016-11-09 01:17:26) @twitter	RT @SBS_Science: This teen has invented a sprinkler that knows when plants need more water. https://t.co/xr2KltjLZg @UNSWnews