With that motivation, he decided he wanted to be an environmental engineer, and found himself in the agricultural and biological engineering program at Penn State University, where he focused on soils and water research.
Update april 2016: The top 3 best sold battery powered weed eaters are the: 1) Black & Decker LST136W. 2) GreenWorks 21332 G-MAX. 3) Worx WG175 MAX. As you can see 2 out of 3 are still going strong since 2014, namely the Black & Decker LST136W and the Worx WG175 MAX, see their reviews below.
There's a reason the Black & Decker LST136W is one of the world's best selling weed wackers - it does what it does very well. Black & Decker LST136W. One way to maximize the power of corded or battery-powered weed eaters is to use a smaller cutting diameter.