Dr Kandi Ejiofor (right) and epidemiologist Tim Spector unpack the risks in modern diets on the Mind and Body StageAlistair Veryard The hall hummed with joyous curiosity at this year’s New Scientist Live at Excel London, which ran from 10 to 12 October and attracted thousands of visitors of all ages. With topics including the search for extraterrestrial life, what AI is teaching us about consciousness and the maths behind Pokémon, there was a delightful range to explore. Highlights included physicist Jim Al-Khalili diving into the deepest mysteries of time and psychologist Kimberley Wilson on how to build lifelong brain health. Other packed talks ranged from how we evolved, from anthropologi...