What in the World Are They Spraying?

What would you say if you were told that airplanes were regularly spraying toxic aerosols in the skies above every major region of the world? That is exactly what a group of protestors were claiming outside of the annual American Association for the Advancement of Science (AAAS) meeting that was held in San Diego from February 18-22.

تُعرض النبذة بالإنجليزية لعدم توفر ترجمة بعد.