As summer approaches, many people will start working on their suntan, trying to lose their winter pallor. But what do we really know about tanning and how does sunscreen work? When we are exposed to...

It is springtime and wherever you look you will see flowers in a dazzling array of colours. It is that time of year when we can admire flowers blooming in many beautiful colours. Although it seems...

Every second about a million billion of them fall to the ground, and yet, half of the world's population has never seen them close up. Snowflakes are ice crystals that fall through the Earth's...