Latest from Focus...
16/10/2014
In this month’s Focus: how to travel faster than light, why your cat is wilder than you think, dinosaur feathers explained, and are screens bad for you?
Q&A
14/10/2014
Q&A
13/10/2014
10/10/2014
10/10/2014
09/10/2014
09/10/2014
Gallery
Apollo 11 in pictures
Poll

UK scientists and engineers have devised a smartphone app that can give you an eye test. Add your vote to our poll to let us know what you think...

If a smartphone app could offer an eye test, would you use it? If a smartphone app could offer an eye test, would you use it?

UK scientists and engineers have devised a smartphone app that can give you an eye test. Add your vote to our poll to let us know what you think...

Q&A

This is a tough one. Some scientists claim that all thinking needs words and grammar, and is really talking to yourself. Others argue for a special ‘language of thought’ that uses...

This is a very widely held urban myth. Residents of Denver, Colorado (1600m), will tell you that one drink in Denver is the same as two in Chicago (179m). However, the research is against it....

Radio waves are part of the electromagnetic spectrum, just like visible light, but because the wavelengths are longer, they contain less energy. This makes them interact more weakly with the outer...

The Earth takes a fraction over 86,400 seconds to complete a revolution around its own axis (one day). It takes about 365.25 times as long to complete an orbit around the Sun (one year). If you...

The glowing beams of light are the result of electric currents passing through gases like helium and neon at very low pressures. How the beams behave depends on where the current flows begin and...

Vertebrate eyes need to focus a sharp image onto the retina so the surface needs to be optically very smooth. A dry eyeball would quickly get scratched and dusty and surface cells would die...

It depends on whether you look at the gross or net figures. Britain is currently said to be experiencing the worst 'brain drain' of any country in the world, with 1.1million of our university-...

The best robots today struggle to walk over uneven ground, never mind stage a successful coup. And while computing power has advanced enormously in the last 50 years, battery technology has not...