Plastic toys are everywhere and with good reason: plastic is great for making toys. It is cheap and durable, and can be moulded into pretty much any shape.

In our fast-moving world, biotech is at the forefront of developments – but, by its very nature, it can provoke ethical and moral concerns .

If aliens were to examine a human, they would think we were just slavish organisms designed to feed microbes and carry them around. Our bodies contain ten times more bacteria than cells , and there are an estimated 3.