Friday Illusion: Rotating snakes get a new twist
See how shaking a classic illusion and changing its colours can enhance the spinning effect
Watson, the supercomputer genius, heads for the cloud
As Watson's intelligence matures, making it available to a wider community is IBM's next step - and the cloud looks like the place to start
Sublime photos of weird, wonderful and rare animals
See our pick of the photos of endangered animals presented at London Zoo's Animal Photography Prize exhibition
Chimps' bottoms and dead salmon: 2012 Ig Nobel prizes
Take a look at some winners of the prize that celebrates the science that "makes you laugh and then makes you think"
Playing PC games on TV opens up new world of gaming
A new PC interface for TV screens is set to change gaming?- and could herald future smart TVs with the power of modern PCs
Asteroid Vesta's hydrogen suggests water-delivery role
Meteor impacts probably delivered water-bearing minerals to the space rock long ago, which may be how water arrived on early Earth
Genetic study finds complexity in cradle of humanity
A comparison of the genomes of present-day southern African populations confirms that our ancestors did not originate from a single group
Feedback: Electrons are so good for your feet
Feel-good electrons, ice cream that does your head in, two-dimensional pop stars, and more
Geological clues from Noah's flood?
Reviews of a geologist's take on Noah's flood, the distress and discord of noise, and how our world is run by algorithms
Only in 3D are spheres the worst packers
Spheres waste the most space of any shape if you are packing identical objects into a box, but they are only the worst shape in a 3D universe
Friendly robot uses Facebook to interact with you
Watch a humanoid robot interact with one of our reporters by tapping into her social network profile
Big bangs theory: Unlocking the secrets of great hair
The physics of what happens on the top of our heads is surprisingly complex, says Michael Brooks
Video mash-ups give you personalised memories
Videos of public events could be tailored to the interests of individual users, making other people's home video a thing of the past
Let's use evolution to turn us green
We say we want to save the planet, but don't change our lifestyles to do so. Is evolution an overlooked option, ask Mark van Vugt and Vladas Griskevicius
Space for sale: Astronauts may decide keepsakes' fates
A new bill passed by the US House of Representatives says astronauts should be able to legally keep, sell or donate mementos from their missions
Breathing nanotubes pop out buckyballs like peas in a pod
Self-assembling, pulsating nanotubes can act as a nano-pump, making them potential vehicles for drug delivery
Zoologger: The cyanobacteria destined to be organelles
Nitrogen-fixing cyanobacteria in the world's oceans may be midway through the process of becoming organelles inside an alga
Weird waves help model tsunamis' destructive potential
Shallow X- and Y-shaped waves are more common than thought and offer an insight into the interactions that boost a tsunami's power
Arctic caught in worst state of undress ever recorded
It's finally happened. New satellite images show that the Arctic sea ice shrank to its lowest extent on record on 16 September
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