The man who weighed thoughts
A century ago, Angelo Mosso built a weighing machine that he said could measure brain activity. A modern recreation shows he might have been right
Perfection is a myth, show 50,000 bacterial generations
The longest-running evolutionary experiment ever carried out in a lab shows that even in a stable environment, perfect fitness is never achieved
Comet of the century ISON finally visible to naked eye
As it hurtles towards the sun, comet ISON has unexpectedly brightened – but will it survive long enough to be visible in the daytime as predicted?
Pregnant mother's stress affects baby's gut and brain
Stress alters the microbial community in a mother's vagina, finds a study in mice – the changes are passed to her baby's gut and could affect its developing brain
Feedback: Runaway expansion
Tape measure for the universe, blood libel or science lessons, and how much does data weigh?
Hall of shame: Seven species that humans wiped out
As humans spread across the globe, countless species died out. However, only a few extinctions can be blamed entirely on us. Here are seven of them
Mars probe to sniff atmosphere and scout safer landings
NASA's MAVEN orbiter will search for clues to how the planet's atmosphere has developed, and how density fluctuations might affect future crewed missions
Uncool quantum state survives for record 40 minutes
Atoms that can survive in the fragile quantum state of superposition at room temperature could make quantum computers more practical
Wolves turned into dogs by European hunter-gatherers
European hunter-gatherers were the first to bring dogs to heel, perhaps as early as 32,000 years ago
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