The more I think about it, the stranger it seems that we exist on a place like planet Earth. It’s amazing that we just happen to have everything we need to survive: the air, water, the ozone layer, the temperature, and the sun. Of course we are not the only ones living in the universe, but in any case, I feel we are very fortunate to have been born in a place like this, although we are not doing our best to deserve what we have.