Scientists around the world are working on ways to hide us from sight. But how close are we to developing tech that could make us invisible?

Step aside, Loch Ness Monster

Expert-backed tips for the best post-work life

We might not know when the Big Bang actually was

The textbook version of a heart can look flat and motionless, which doesn't really equip us with a proper understanding of how it works. It looks different on an ultrasound scan (also known as an echocardiogram). It's easy to be struck by how tireless it is: contracting and relaxing in a precise rhythm without change. It's hypnotic. But of course, the heart does tire – it just takes a few billion beats for it to happen. And for some of us, years of neglect means that it’s likely to happen a little bit sooner. So, how can we add some extra beats or, at the very least, make life a bit easier on the old ticker? Alongside all the usual advice (get some exercise, eat less bacon and so on) researchers are discovering that some surprising small changes can also significantly lower your risk of heart disease. And the good news is that they add up. In this issue, we share what we’ve uncovered.

Sorry, Mum

Recent studies have found a strong link between rising stress levels and expanding waistlines… And modern life isn’t helping

We've all heard it before, but is this a myth or a truth to live by?

The weight-loss drug has made headlines and broken sales records, but what does it mean for our future?