Mark Petruzzi, member of the Sustainable Purchasing Leadership Council, has spent more than 20 years examining the life cycle impacts of products, services, and ways to practically reduce them. In

Mark Petruzzi, member of the Sustainable Purchasing Leadership Council, has spent more than 20 years examining the life cycle impacts of products, services, and ways to practically reduce them. In this talk, Mark will discuss the Global Ecolabeling Network, and its importance in providing credibility, transparency, and proven results protecting health and the environment.

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Nuclear power: the energy crisis has even die-hard environmentalists reconsidering it. In this first-ever TED debate, Stewart Brand and Mark Z. Jacobson square off over the pros and cons. A

Nuclear power: the energy crisis has even die-hard environmentalists reconsidering it. In this first-ever TED debate, Stewart Brand and Mark Z. Jacobson square off over the pros and cons. A discussion that'll make you think -- and might even change your mind.

TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes.

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