Pentagon officials said Wednesday there is no evidence that a mysterious, spiraling vapor trail that was captured on video off the coast of Southern California was generated by anything but an ...

The Defense Department said Wednesday that it is satisfied the mysterious vapor trail recorded in California was “likely caused by an aircraft,” Fox News Channel reported. “The Department of Defense, ...

Water vapor added to the air in jet engine exhaust leads to “condensation trails,” those wisps of cirrus-like clouds that we see behind high-flying jet aircraft. Temperature and humidity at flight ...

The word "chemtrails" has trended on sunny mornings this summer - but what's the truth behind the conspiracy theory? Look up at a clear blue sky and you might see puffy white trails behind aeroplanes.

Unanswered questions about the formation of clouds and their impact on the climate are currently setting limitations on the validity of global climate forecasts. To make a detailed analysis of the ...

Water vapor added to the air in jet engine exhaust leads to “condensation trails,” those wisps of cirrus-like clouds that we see behind high-flying jet aircraft. Temperature and humidity at flight ...