The aviation community is taking on ambitious goals for alternative jet fuels, tackling complex scientific, economic, and environmental issues to find sustainable alternatives to petroleum in the near future.

The Federal Aviation Administration (FAA) and Volpe are poised to launch a new environmental analysis tool that will offer a robust, integrated way to quantify the environmental impact of aviation—from a single flight up to full-scale global impacts...

This is a key year for global navigation satellite systems. However, an item that sells for as little as $30 has already caused big problems for this rapidly growing technology and highlights the vulnerability of GPS.