A keystone in an arch's crown secures the other stones in place. Keystone species play the same role in many ecological communities by maintaining the structure and integrity of the community.

US President-elect Joe Biden is to cancel the controversial Keystone XL Pipeline on his first day in office, North American media report. The pipeline is projected to carry oil nearly 1,200 miles ...

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A keystone species is a species that plays an essential role in the structure, functioning or productivity of a habitat or ecosystem at a defined level (habitat, soil, seed dispersal, etc).

The massive project was meant to span Canada and the US Within hours of taking office, President Joe Biden signed an executive order rescinding the permit for the Keystone XL pipeline. The move ...

A Goshen, Indiana company created in 1996, Keystone RV produces an extensive range of travel and fifth wheel trailers. Designing trailers between 17 and 42 feet in length, lightweight construction and ...

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Wonder Land: One of the campaign’s most important issues is the vast power and authority of the federal government. Photo: Andrew Caballero-Reynolds/AFP/Getty Images Indiana, Pa. ‘If we win ...

Iansiti, Marco, and Roy Levien. The Keystone Advantage: What the New Dynamics of Business Ecosystems Mean for Strategy, Innovation, and Sustainability. Boston: Harvard Business School Press, 2004.

A Goshen, Indiana company created in 1996, Keystone RV produces an extensive range of travel and fifth wheel trailers. Designing trailers between 17 and 42 feet in length, lightweight construction and ...