Like necessity, war breeds invention, so it is not surprising that many great scientists and engineers have made significant contributions to warfare. Our gallery shows how conflict has sparked innovation – and sometimes regret
Their dads may be up with the sun, but it takes more than that to wake up a chick still in its egg. Unhatched chicks aren't roused from slumber by random noise, but they do wake up if they hear a chicken danger call.
Is our ability to map numbers onto a physical space – such as along a line – a cultural invention rather than an innate ability? Members of a remote tribe in Papua New Guinea understand the concept of numbers but do not map them along a line, which suggests that the 'number line' must be learned.
What would the world look like if we could seamlessly blend our physical and digital environments? In this video, designer Keiichi Matsuda overlays information over physical space in real time to show what augmented reality might be like in the future.