@Zoemariee90@LoveIsland it's rammed down our throats, I certainly don't follow it, yet semi naked low IQ adverts are a constant on all forms of socials.
@sachaistreem A difference in flight level of 1,000 feet is enough for one aircraft to cause a contrail and the other not. In addition, contrails of more efficient engines with cooler exhaust gases can form at lower altitudes than those of less efficient engines.