Despite centuries of research, one of Earth’s most awe-inspiring phenomena is still not fully understood.

Particles released by decaying satellites could be causing an unwanted, harmful impact to the ozone layer.

A new study suggests hearing loss could raise your risk of heart failure – and reveal early warning signs of trouble

Think the gym is your only bet for burning belly fat? Emerging research suggests otherwise. So what actually works best... and can you just skip exercise entirely?

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.

Why are we so bad at multitasking? A neuroscientist explains.

Running feels like a drug – here’s the molecule that explains why

The number of severe immune reactions to food is reaching epidemic proportions, but a one-size-fits-all cure could be on the horizon.