GLOBAL WARMING ( DANIEL RUIZ) AND THE THICKNESS OF THE OZONE LAYER

 The plane keeps going up, overtaking blocks of clouds, until the sea and the land are barely noticed down below, there is just a bed of greenish and cyano colours, a kind and quiet seat. In a short while, they´ll reach the maximum height, around twelve thousand metres, with an outside temperature about fifty degrees below zero.  Very close to there, just five kilometres higher, the ozone layer is located. Between the km fifteen and fifty, that zone of the stratosphere is displayed, that which concentrates the 90 per cent of the ozone from the atmosphere, absorbing the most part of the high-frequency ultraviolet radiations. It is imperceptible, with  a thickness just under five milimetres, but its  effect is decisive for skin and ocular protection of people. Like from here, as well, is imperceptible the effect of global warming.

So finite  the ozone layer is !, and even thinner  if it were under normal pressure on the Earth's surface. Very weak, very dim, just 5mm; don't even think of throwing deodorant or hairsprya on a plane.  The certainty that our skin health or the climatic stability of our planet depends on a 5-millimeter shield gives very little security, in fact.