If water's the stuff of life, why do we still live in a world of littered rivers and oil spills? Today, a look at water pollution - and what we can do about it.

How do self-driving cars see where they're going? One way is by using a kind of light-scanning laser called LIDAR - and here's a quick look at how it works.

The ideas we have about ourselves and other people are often well wide of the mark - as 10 amazing experiments from the history of psychology impressively demonstrate!

Are you feeling lost? GPS "satnav" will soon put you right. Today we take a simple look at GPS, Glonass, Galileo, and the other space satellite navigation systems spinning around over our heads!

No, the Wright Brothers didn't invent flying - the idea actually dates back through thousands of years of history. Today, we glide through the story of human flight!

Today we discover how atoms vibrating 9,192,631,770 times a second can help us tell time. Welcome to the wonderful world of radio-controlled, atomic clocks!

From HAL and "Speak & Spell" to Siri, and Alexa, we look at how speech synthesizers work... and why they still don't work perfectly!

Is there still a place for the lone genius inventor - the Edison, Ford, Tesla, or Marconi? Or is invention now solely the province of giant corporations like Apple, IBM, and DuPont?