The industrial revolution made the world wealthy through a simple idea: to replace the physical labour of humans and animals with energy from fossil fuels. Two-and-a-half centuries after the revolution started, however, it is in trouble. The oil that powers much of the world’s economy is running out, and the greenhouse gases given off by the fuels are harming the planet.
Virtual simulations can also help build aeroplane wings more efficiently.
Understanding consciousness in healthy people could help when things go wrong.
Dr Michaël Gillon on what's next for exoplanet science.