HEATKEYS

YouTube is a place to discover, watch, upload and share videos.

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

Based in Skokie, Ill., the Portland Cement Association represents cement companies in the United States and Canada. It conducts market development, engineering, research, education, and public affairs programs.

We’re developing open source industrial machines that can be made for a fraction of commercial costs, and sharing our designs online for free. The goal of Open Source Ecology is to create an open source economy – an efficient economy which increa...

Buy and sell electronics, cars, clothing, apparel, collectibles, sporting goods, digital cameras, and everything else on eBay, the world

NorthernTool.com

Stryker manufactures medical devices and medical equipment. Stryker is a leader in the worldwide orthopaedic medical technology market and is at the forefront of medicine

National Oilwell Varco is a worldwide leader in providing major mechanical components for land and offshore drilling rigs, complete land drilling and well servicing rigs, tubular inspection and internal tubular coatings, drill string equipment, exten...