Are we really facing a drinking water shortage?

Are we facing a drinking water shortage? Yes, although few want to talk about it. While you barely go five minutes without someone mentioning global warming or the planet running out of oil, the lack of drinking water is arguably a more pressing concern. It seems strange that this should be a problem given 70 percent…

Can the world sustain the current population growth?

Last month the global population of humans hit seven billion; an extra billion people since 1999. Given that it took until 1804 to reach one billion, the recent upsurge would suggest serious problems in future. The immediate concern, however, isn’t actually space. Standing shoulder-to-shoulder, the entire world’s population could fit within the 1,300 square kilometres…