Latest from Focus...
31/10/2014
31/10/2014
30/10/2014
"Why don’t butterflies fly in straight lines?" and "Is the right side of your brain really more creative?" BBC Click Radio presenter Gareth Mitchell answers life's big questions
28/10/2014
Q&A
27/10/2014
24/10/2014
Q&A
23/10/2014
Gallery
Apollo 11 in pictures
Poll

Dropbox, iCloud and Snapchat have all denied being “hacked”, but all three services have seen either passwords, pictures or videos leaked from their services in the last few months.

Do you use "cloud" storage to backup your files? Do you use "cloud" storage to backup your files?

Dropbox, iCloud and Snapchat have all denied being “hacked”, but all three services have seen either passwords, pictures or videos leaked from their services in the last few months.

Q&A

People in pain typically have lowered eyebrows, raised cheeks, tightened eyelids, an open mouth, and closed eyes. One reason is to escape from the cause of the pain. Tensing up your muscles and...

Until around 100,000 years ago, Europe was dominated by the Neanderthals. But by 28,000 years ago, the last of them had vanished from their final hold-out in Gibraltar, having apparently lost out...

Around four per cent of the population – almost all of them male – have the most common form of colour blindness, which prevents them distinguishing between red and green. The principal cause is a...

‘Life’ is a macroscopic, anthropocentric concept that doesn’t scale down to the level of a virus very well. Most definitions put viruses at the boundary between living and non-living because,...

In a word, radioactivity. We’re all living on top of a vast natural nuclear reactor, packed with uranium, thorium and potassium that ended up trapped inside the Earth during its formation...

What an impossible question! If I could answer it I would have solved a great philosophical puzzle - how activity in a brain can be 'about' something, such as wanting a strawberry ice cream or...

Most pesticides are complex organic molecules and these tend not to be very heat stable. But reliably breaking down all pesticide molecules would likely require prolonged exposure to temperatures...

Blood contains about 700 kcal/litre, so an average adult would need to drink around three litres to meet their energy requirements each day. Would this much blood also contain enough of the...

We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here