It’s a cross between a bus and light rail, a new form of transport that promises greater flexibility  and a reduction in costs – it’s called the trackless tram.

Online bots are getting better at sounding human, because humans online are sounding more like bots. Media academic Charles Seife ponders the future of digital discourse.

And, engineer Dylan Ryan crunches the numbers on solar roads. After several years of testing, do the results match the hype?