Cornell University spin-off Novomer unveiled its first product this week, a renewable polymer that degrades completely and is derived from renewable carbon-based feedstocks.

A rethinking of the milk jug has led to fuel, water and energy savings as mainstream stores make widespread use of the design.

Pratt & Whitney has created a jet engine that uses less fuel and emits less carbon dioxide and nitrogen-oxide at a time when rising jet fuel prices are crippling the aviation industry.