Agence France-Presse: Air New Zealand on Tuesday successfully flew a test flight powered by second-generation biofuel, and hailed it as a “significant milestone” in the development of sustainable fuels for aircraft. The airline used a 50-50 blend of standard jet fuel and synthetic fuel made from the oil of jatropha plant seeds to power one of the engines on a Boeing 747 during a two-hour test flight. It was the world’s first test flight using jatropha biofuel and followed a Virgin Atlantic test …