This is an international experiment for an issue that has international implications. The Mexican government, the U.S., the German government, and others are all involved in this effort to protect this natural resource that we all breathe.

This is a critical mission that will be watched by scientists around the world. We want to answer vital questions about how humans affect the environment.

There is evidence that imported Asian pollution causes ozone levels in the air crossing the western border of the U.S to increase. This makes efforts to achieve American air quality standards more difficult and costly. Though we don't have any control over pollution coming from other countries, we can try to predict the quality of our future air and climate based on its source. These scientific experiments are necessary to do this.

I have been in the government, so I can say that it is false.

The government of Pakistan has placed some restrictions on the insurgents but success does not come through half-measures and it is important the terror infrastructure is dismantled (by Pakistan) from its roots,

We will revert shortly to the government of Pakistan with alternative dates,