Some pine trees are among the oldest living trees on Earth. A bristlecone pine is the oldest living tree. It is 4,800 years old. Pines are found in mountainous places and the cool areas of the northern half of the Earth. There are about 90 varieties of pines. Their cones are the hard scaly clusters that are often used for decorations. Pine trees have needlelike leaves that stay green all year-round.
Pines vary widely in size. Some are only a few meters tall. Others grow taller than 61 meters.
The wood is used in construction as well as for making paper. Resin makes turpentine, paints, and varnishes. Pine oil can be used as medicine.