As this video shows, not all octopus' limit their exploration to the bottom of the sea.
A look at a new technology that superimposes computer-generated images over the real world.
How exactly do we define the weight of one kilogram and can it change over time ?
Scientists have come up with a way to make batteries and their cases stretchy.
View: More videos
How long would it take to count to one billion and has anyone ever managed to do so ?