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.
Lawn Mower Battery Powered Cordless 24 Volt 14 Inch Mulching Grass Bag Quiet. WORX WA 3217 24-volt Lead Acid Lawn Battery for WG784 and 786 Lawn Mowers. WORX WG775 Lil'Mo 14-Inch 24-Volt Cordless Lawn Mower with Removable Battery ...