New technology aims to help you induce a lucid dream at will, enabling you to enter a state of consciousness where anything is possible. Dare you close your eyes?

They’re behind millions of deaths every year – but fatty build-ups in our arteries often slip by unseen. How can we spot them before it’s too late?

A hidden force is causing highly populated river deltas to sink. In many cases, the subsidence is happening faster than the sea is rising

There are millions of bacteria living in our guts. There are millions of dead bacteria there too. And scientists are learning just how much potential the dead ones have to improve our health

There’s a growing school of thought in neuroscience that argues every action is predetermined, or at least highly probable. That my actions are just the sum of biological and environmental interactions outside of my control. Roughly speaking, the idea is that electricity pinballs between my ears, bouncing around the memories and concepts I hold there without my being conscious of it, before arriving at a series of outputs that prime my fingers to type this very sentence. And only then, do I become aware of ‘deciding’ what I want to write. Action precedes thought, in other words. This isn’t just a theory – there’s evidence to back it up. It seems that, in certain scenarios, neurons controlling your arms and fingers are ready to fire before those involved in conscious thought are fully active. I’m skipping over a mountain of philosophy and psychology, but you get the picture. If, like me, this idea leaves you feeling a little uneasy, maybe this will help. Neuroscience has gotten incredibly close to the minutiae of the brain in the last two decades, but it hasn’t yet wrestled with the big picture. The discipline can tie different actions to different parts of the brain, but it can’t explain why it feels good to spontaneously dip your hand in a cold, clear river, for example. My point is, neuroscience is uncovering all kinds of fascinating oddities about how the brain works, but we’re a long way away from a true understanding of how this adds up. Does free will actually exist?

Studies show that pedestrians walk faster now than they used to, some 15 per cent faster. Why is this happening?

Can negative thinking raise your risk of dementia and other psychological disorders? Here's how to catch the negative thinking pattern

How many electrons are there in the Universe? One bold theory suggests that there could only be one, although this theory has issues

Can you catch COVID on top of COVID? A doctor explains why it is, unfortunately, a possible scenario and what you can do to protect yourself