The last links of the week.

• Trevin Wax interviews Andrew Wilson about his book Unbreakable
• It is likely that one of the themes of 2015 (as pretty much every year, ever) will be war. Here are 10 conflicts to keep an eye on
• If you run a website and you want people to, you know, actually visit it – then these 7 free site graders will help you make it work
• What language will the world be speaking in 2115? Not as many languages as we do now
• Sticking with the future theme, what will the mega-cities of the future look like? These photos are somehow a little discombobulating (great word to use)

Finally talking of cities, take a look at how Shanghai has changed in just 20 years

Shanghai, 1990 vs. 2010 pic.twitter.com/zypGm7Gtmx

— Michael Hendrix (@michael_hendrix) January 22, 2015