Smart buildings and mile-high skyscrapers: engineers are now able to build bigger structures that could even think for themselves. What can we achieve when we push technology to its limits?

Revolution 2011

Iran, Tunisia, Egypt and Libya. We investigate how social media has sparked social change and how the protestors have torn down digital barriers in their way

Japan Special report

The earthquake, tsunami and Japan’s nuclear crisis explained. Where next for a megaquake?

Dr Who special effects

Find out how SFX artists blow up Daleks blow and make the Tardis fly. We go behind the scenes to uncover the secrets behind the most explosive episodes yet

The science of saving money

The banking crisis explained and the science that could save you £10,000 this year

5 worst ways to die in space

Passing on after blasting off by asphyxiation, suffocation and spaghettification

iPad 2

First look at Apple’s new tablet – was it worth the wait?

PLUS

Q&A: Why do we get déjà vu? Does things crash into the Sun? What is flammable ice?
Mystery elements: the periodic table is far from complete
MegaPixel: amazing images of glowing seas and spy spacecraft
Five of the best: headphones
Tried and tested: running shoes