Blast walls, drone fences and special combat units are on the way
More batteries are needed
Economically, things don’t look quite so rosy
New decentralised networks are even harder to disrupt than the hierarchical gangs they have replaced
Also this week, extremism on social media, splitting investments, lift operators, Kevin Keegan, opera singers
Forget Greenland; worry about Alaska
Lessons from a $10bn panic on the prairie
They are more inventive and adaptable than ever
But there’s a catch