For the first time, a widely used commercial jet engine just completed a test powered ... only synthetic fuel derived from renewable raw materials such as vegetable oils and animal fats.

Private jet engines range in price from $50,000 for a tiny turbofan to $50 million for a commercial powerhouse.

This new Cu-Ta-Li alloy offers a balance of properties not found in existing materials: Nickel-based superalloys (used in jet engines) are extremely strong but lack the high thermal conductivity ...