troposphere

Atmospheric measurements collected by weather balloons in the Northern Hemisphere over the past 40 years show that climate change is pushing the upper boundary of the troposphere.

The new discovery of ammonia on the lowest level of the atmosphere will be very supportive in building a global climate change model.

Currently, large aircraft often have to fly at altitudes above 10,000m. Why fly so high? Low flying is not safer or what?

If successful, this special aircraft will conquer every record of previous altitude.