What Would Happen If The Amount Of Oxygen DOUBLED?

Let's imagine that the amount of oxygen in Earth's atmosphere was doubled. So what could be the effects and affects? This type of event can radically change the environment that we live in! Lets see what can happen during the time:

====== Paper airplanes will fly further ======

With all the extra oxygen's, the air pressure surface increases significantly. Gliders, parachutists, birds and paper-plane hobbyists will be able to enjoy a greatly improved performance.

====== Everyone gets better gas mileage ======

Oxygen improves engine performance by producing hotter reactions and reducing the proportion of nitrogen. And it reduces heat transfer. So everyone will get better mileage than before.

====== Higher elevation Biomes become inhabited by more vertebrates ======

Areas such as the high Himalayas or high Andes are no longer off-limits to animals without special adaptations to increase their levels of hemoglobin.

====== Insects of unusual size ======

Many insects rely on gaseous diffusion to for respiration, therefore the maximum body size depends on the proportion of oxygen gas in the atmosphere. Most bugs get bigger, some smaller.

====== Everyone feels more alert, active, and happier ======

All that fresh oxygen improve our cognition, alertness, and physical performance.

====== We get sick less often ======

Neutrophils, soldiers of the immune system, destroy bacteria by using NADP oxidase to pump ions into, and disrupt, intruding cell’s membranes causing rupture. So we will not get sick usually.

====== We die younger ======

Free radicals are thought to exacerbate the aging process through Oxidative stress, which interferes in numerous cellular processes and are also thought to contribute to MS, Alzheimers, Parkinsons, and a host of other ailments.

What you think about it? Ins't it interesting?