I think that the most dangerous issue in the world today is the rapidly depleting fresh water resources.
We have just had a major dispute between two states of India being settled by our Supreme Court on the issue of sharing river waters. There are some other states fighting with others for similar reasons and also cases of nations fighting with each other for river water sharing.
You can imagine what the world will be fighting over next when you consider that there will be places on earth where drinking water will not simply be available. If you can’t, I strongly recommend a book that I read a few years ago called THE WATER WARS BY CAMERON STRACHER
I try and save water at every possible occasion. There are a number of ways of doing this as can be learned here as an example.
Shackman has suggested today’s topic for the weekly 2 on 1 blog fest. Please check what he has to say on the same topic.