World's smallest microphone is just one molecule
By making the tiniest microphone, researchers hope to listen in on super-small sounds made in chemical and biological reactions
Immune signature predicts recovery time after operation
Some people are on their feet within days of major surgery while others are confined to bed for weeks – a blood test could one day predict which you'll be
Shuttle map gives the best view yet of Earth's curves
Fourteen years ago, the space shuttle flew a mission to map the contours of our planet in unprecedented detail. Now the data is finally released in full
Everyday drugs could give extra years of life
Evidence is emerging that some widely used drugs can prolong lifespan for well people – and insiders have started taking them off-label
The best and worst countries in the world to be old in
Human lifespan is rising fast everywhere, but the Global AgeWatch Index shows that some places do better than other at making the most of their old people
Zoologger: Fickle female guppies fancy fresh faces
What happens at the fishy equivalent of a cocktail party with too many male guests?
Beat temptation with the marshmallow psychologist
We need willpower to resist our desire for instant gratification, but first we need to know our enemy, says Walter Mischel
How air conditioning overwhelmed its hothead haters
It was a fight between vested interests and institutional boneheadedness, but as Cool: How air conditioning changed everything explains, common sense won out
Chimp social network shows how new ideas catch on
A study of how a chimp trick for drinking water spread throughout the social network is the first time social learning has been seen in wild chimps
Earth gets a new companion for trip around sun
Newly discovered asteroid 2014 OL339 is the latest member of the entourage of space rocks that temporarily join Earth in its orbit around the sun
World's wildlife population halved in just 40 years
Populations of vertebrate species have declined by an average of 52 per cent between 1970 and 2010, and habitat destruction by people is to blame
Blame climate change for heatwaves that struck in 2013
An assessment of the extreme weather events concludes that five heatwaves across the world would have been unlikely without greenhouse gas emissions
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