Some planes come equipped with gravel kits, but why are they needed and what do they do? Here's what to know about this ...

As cities worldwide crack down on diesel vehicle emissions, a more insidious form of air pollution has been quietly growing ...

India had relied on Russian suppliers for these parachutes, making the aircraft's sustainment dependent on external sources.

Exposure to air pollution is associated with around 7 million premature deaths per year across the world. When we think of ...