The CCTV ecosystem is evolving – but it's still a sparse patchwork with limited efficacy in reducing or prosecuting crime.
US cities were designed and engineered around cars. Now some are working to increase walking and biking, but the shift isn't easy.
As traffic slows down, research is gathering momentum.
Politicians want us to believe closed circuit TV makes us safer. But the main beneficiaries are private firms handed lucrative tax-payer contracts.