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.
Milwaukee M18 Fuel: With high torque, a top quality battery powered impact wrench. I've saved the most powerful for last. Milwaukee is a premium brand in the power tool world, and their line of 18 volt equipment is second to none. The M18 Fuel is a fantastic and powerful rechargeable impact wrench with a truly impressive amount of torque to play with. This is the 1/2 version, so it's more powerful than the 3/8 model they offer.