This is interesting and noteworthy:

Planning to fly off to the tropics? Well, its time you reconsidered your holiday plans, for according to a new research, a typical flight there has a greater impact on global warming than a flight in temperate latitudes.

As well as producing carbon dioxide and contrails, planes also produce nitrogen oxide, which triggers both the creation of the warming gas ozone, and the destruction of another greenhouse gas, methane, according to the study.

According to Keith Shine of the University of Reading, UK, in mid-latitudes, the ozone and methane reactions cancel each other out and you get zero net warming from nitrogen oxide emissions, reports New Scientist.

But the brighter sunlight in the tropics is very efficient at converting nitrogen oxide to ozone - in fact it creates ozone five times faster than in the air of mid-latitudes, according to Shine's calculations.

Whereas methane destruction only increases marginally, Shine added.

Hopefully when I'm ready to retire, train service to Florida will be much better than it is today, and then rail passengers can hop on my boat and I'll take you to any tropical island you want to visit :)