John Ternus will take over running the technology giant as Cook steps up to become executive chairman.
A stellarator is difficult to build, but could it be the best way to make fusion energy work?
Paul Carter checks out the newest phones, gadgets and trends from MWC Barcelona.
Alasdair Keane visits the underground insect farm turning food waste into animal feed.
How research linking climate change and extreme weather events is being used in lawsuits.
Shiona McCallum tours Blenheim Palace, exploring the tech aiding its restoration.
Humans are returning to the Moon – hear about it on the BBC’s space podcast, 13 Minutes
Attribution science is becoming an increasingly important tool in climate lawsuits.
Is there a way to fix AI’s problem with trust?
Can pedestrians, runners and cyclists safely share the road with self-driving vehicles?