An abstract Earth with its geomagnetic fields

If there’s any subject that perfectly encapsulates the idea that science is hard to understand, it’s quantum physics. Scientists tell us that the miniature denizens of the quantum realm behave in seemingly impossible ways: they can exist in two places at once, or disappear and reappear somewhere else instantly.

The one saving grace is that these truly bizarre quantum behaviours don’t seem to have much of an impact on the macroscopic world as we know it, where “classical” physics rules the roost.

Or, at least, that’s what scientists thought until a few years ago.

Quantum processes might be at work behind some very familiar processes

Now that reassuring wisdom is starting to fall apart. Quantum processes may occur not quite so far from our ordinary world as we once thought. Quite the opposite: they might be at work behind some very familiar processes, from the photosynthesis that powers plants – and ultimately feeds us all – to the familiar sight of birds on their seasonal migrations. Quantum physics might even play a role in our sense of smell.

In fact, quantum effects could be […]