My singing really seemed to connect with people, and it ended up as my main career, which I love.

Around 2000 different types of plants are used by humans to make food.

Alkali metals such as sodium, potassium, rubidium, caesium and francium are extremely reactive elements, just putting them in water can result in an explosion! They are carefully stored in oil to prevent this happening.

At room temperature, mercury is the only metal that is in liquid form.

While aluminum is the most common metal found in the Earth's crust, the most common metal found on Earth is iron, mostly because it makes up such a large part of the Earth's core.