Earth is now well into it's six, (or seventh, opinion is divided) mass extinction event. Don't take my word for it, check it out: 50% of species are being wiped out at you read this: - climate change, pollution, deforestation, it's happening, it's real, it's here, and pretending it isn't, no matter how forcefully, isn't going to change that.
However, there is good news: it only takes a 7% of the population to wake up and work for change, to make it happen. Here's encouragement to do so from Professor Brian Cox, from "The Human Universe" (BBC2 Sunday 8pm):
"We are probably alone in the universe, and that makes us indescribably precious and valuable ... We are the only islands of meaning in an infinite sea of lonely stars ... We have the responsibility to work together as a civilisation to survive, and ultimately to explore those stars."
Let's go for it - for the sake of the children of Earth.