Can a computer convince you that it's human? Read more
Can a computer convince you that it's human?
How did the price of oil become so important?
The manufacturing revolution that started with a gun
The surprising lessons lurking under the lid
Interface Message Processor
The big metal box that made the internet possible
How much does it cost to outlaw something?
Why did a machine for making cigarettes transform the advertising industry?
What would happen if GPS stopped working?
How did an invention that was never built help make the modern world?
A vital aid for many, but billions don't know they need them
What does the fashion industry owe to an 18th-century potter?
A system that solved big problems is now facing its greatest challenge
What are the rules when people have to lose their jobs? Evan Davis and guests discuss.
The potential of elephant grass as fuel
In the fight against climate change, some see potential in elephant grass as a clean fuel
Update: BRICS countries hold annual summit in Brazil
The countries represent 40% of the world's population and a third of global output
BRICS countries hold annual summit in Brazil
Big plans for broadband
Sean and Mickey look at Labour's plan to nationalise part of BT and offer free broadband.