Our choice of romantic partners has a huge bearing on our future well-being. But what makes certain people more attractive than others? According to psychologist Carlota Batres, there are two fundamental concepts shaping our preferences: symmetry and masculinity/femininity.

Movements and perceptions are often thought to stand independently from each other — on the contrary, the human brain is always performing a multitude of cognitive processes. Alejandro Galvez-Pol reveals the complexity of the human mind to answer the overwhelming question: why do we have a brain?

Warfare has given rise to an invisible killer, one that was first discovered in World War I, attacking soldiers even after they had returned home to their families. Historian of science Emily Mayhew takes us to Paris in the early 20th century to tell the story of the woman who pioneered research on this invisible killer.

One of the most complex and finely-tuned ways of communicating emotion in humans are facial expressions. Social psychologist Eva Krumhuber fills us in on the latest research and takes us from the Oscars to the quest to create ever more realistic robots.

The general public has been debating immigration with seemingly modern notions of economics, identity and conflict, but is this debate really so modern? Surely our forbears have little to add to the discussion in our globalised world? Alexander Samson doesn't think so.

How do computers understand the information we give them in order to complete an action, such as typing a sentence on a keyboard? How will quantum mechanics be used to radically expand the possibilities in today's computers? Olalla Castro Alvaredo explains the exciting developments in a fast changing field.