I'd rather be a big fish in a specialized pond than a little, little fish in a more generalized big pond.

Tree resin which has been fossilized is known as amber, it sometimes contains plant material or small animals that were trapped inside.

Bronze is a metal alloy made from copper and tin. Copper makes up the larger amount, usually between 80 to 95%.

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.

Aluminum is a good conductor of heat and is often used to make cooking pots.