Home sweet home. Houses are supposed to be our nest, a shelter from the world outside. But how healthy are European homes? Nowadays most of our time is spent indoors, often at home, one reason being the current shift to “desk jobs”.

As air pollution is largely considered to be an outdoor problem, people are little aware of indoor contaminants . The World Health Organisation estimated that each year 4.3 million people die of exposure to household pollutants.

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.

Whenever you eat strawberries, does your throat start to swell and itch? Do you also get a burning or prickling sensation in your lips, gums, tongue or inside your cheeks? Or perhaps drinking milk ...

We don’t really seem to know all that much about the organ we all come from.