Tracey Logan goes underground to find out how Crossrail is using the latest engineering techniques to bore 26 miles of tunnels below London's tube network, sewers and foundations.
Forecasting earthquakes - Increasing numbers of seismologists say that hopes of forecasting earthquakes may be doomed, because the earth is just too complicated. Roland Pease reports
Roland Pease discovers whether photosynthetic life on early Earth led to the evolution of plate tectonics, making our planet unique in the Solar System.
Bacteria need to talk to each other to cause disease. The bugs coordinate their assaults on use with a communication system known as quorum sensing. Geoff Watts explores whether we can stop their virulent chatter to prevent the looming antibiotic resistance crisis the global phenomenon which threatens to leave us defenceless against bacteria infections.
Roland Pease meets scientists in the UK and the US who are hoping to connect cultures of living human neurons to robots to understand how the mind works.