Lights, sound, action!

Emily Bick

John Linwood, BBC Chief Technology Officer, talks about the corporation’s technological challenges and advances

Changing lightbulbs

Dr Richard Stevenson

As light-emitting diodes become more efficient and cheaper to produce, more applications emerge – including challenging the incandescent bulb

Keeping track of energy

Kevin Payne

From water-powered cooling systems to regenerative braking, London Underground’s engineers aim to keep London moving comfortably and efficiently

Energy storage technologies

Dr Jonathan Radcliffe

Increasing demands for power combined with the itermittent nature of many renewable sources call for inventive solutions for storing energy

Talking to machines

Professor Steve Young FREng

How speech recognition systems behind voice-driven personal assistant devices work and are being integrated with the internet and large sets of data

Building bridges

Freda Chu

Engineers in Arup’s Hong Kong offices worked with a team of volunteers and villagers to build a footbridge in a remote area of China

INNOVATION WATCH - The ultimate DIY material

A silicone-based putty that forms strong bonds, remains flexible and can be moulded to make a variety of repairs

HOW DOES THAT WORK - HDTV

How television pictures evolved from blurry 240-line images to 8-megapixel Ultra-HD, digital cinema-quality