No, we need to shut down air travel. No matter how painful, it cannot go on in its present form.

I watched a documentary a few years back called "City in the Sky". It was amazing that at any given moment there would be around 1 million people in the air. A virtual city of one million suspended in the sky by the burning of fossil fuels.

Every hour, of every day, of the year.

This has to STOP.

The cooling effect of the contrail clouds lasts for a very short time. The heating effect of the CO2 will last for thousands.

We have to stop adding CO2 to the atmosphere.