Hundreds of thousands of years ago our ancestors had an intimate relationship with their environment, which helped shape where and how they lived. But when the climate changed - when the river ran dry or local grasslands and herds dwindled - how did ancient humans respond?
What do you get when you combine the huge surge in demand for consumer electronics that we've seen over the part year, with snowstorms in Texas and a drought in Taiwan? Chipageddon.
Britain could significantly cut its carbon footprint if people stopped sending unnecessary 'thank you' emails, researchers said on Tuesday, calling on the public to 'think before you thank'.