Latest from Focus...
19/09/2014
18/09/2014
In this month’s Focus: how you'll live in 2054, why stress is good for you, the balloon that'll take you into space, and the latest electric cars reviewed
12/09/2014
Q&A
11/09/2014
Q&A
09/09/2014
08/09/2014
05/09/2014
"Does photosynthesis occur in moonlight?" and "What’s the best way to treat insomnia?" BBC Click Radio presenter Gareth Mitchell answers life's big questions
Gallery
Apollo 11 in pictures
Poll

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If you have the Facebook app installed on your smartphone then you might have noticed the social network is insisting that you download its dedicated messaging app. Add your vote to our poll to let us know what you think of the new app...

Q&A

Yes – depending on their age, and the market price of the metals they’re made of. The 1p and 2p coins minted before 1992 were 97 per cent copper. In 2006, the soaring price of copper...

Estimates of the bacterial population on your skin range from 1500 to 100,000 per cm2. This gives a conservative population size of 50 million bacteria for the whole body. These could divide every...

Our sense of smell may not be what it was millions of years ago, but it remains a very effective way of protecting our health. Bacteria on rotting food, stagnant water, or even other people give...

Yes, although it sounds implausible. With the wind blowing from behind and sails perpendicular to the wind, a boat accelerates. The wind speed on the sail is the difference between the vessel...

Explosions occur when there is a sudden expansion of gas: that’s what happens when popcorn pops. A popcorn kernel has a moist, starchy inside confined in a tough outer coat...

The violence of lightning certainly seems impressive, and there are around 16 million storms worldwide each year, with typical lightning bolts unleashing around 500 million joules of energy. But...

The ancestral mammoth (Mammuthus meridionalis) lived in warm tropical forests about 4.8 million years ago and probably had a similar diet to the modern Asian elephant. The woolly mammoth (...

It's arguable that robots made astronauts redundant decades ago. As long ago as the early 1970s, the Soviets put two robot vehicles called Lunokhod on the Moon. They spent over a year exploring...