Trees filter our air and keep it fresh by absorbing carbon dioxide and producing oxygen.
Tree roots stabilize the soil and prevent erosion.
Trees improve water quality by slowing and filtering rain water as well as protect aquifers and watersheds.
Trees are carbon sinks, accumulating carbon as they grow and acting as stable carbon stores upon maturity
Three-quarters of the world's people rely on wood as their main source of energy.
Thousand of things are made from trees such as furniture, books, newspapers, houses, hockey sticks, guitars, pencils, fences, milk cartons, even nail polish and toothpaste.
Trees lower air temperature and induce rainfall by evaporating water from their leaves.
Trees provide food, shade and shelter to humans and wildlife.
Trees offer protection from the downward fall of rain, sleet and hail as well as reduce storm run-off and the possibility of flooding.
Trees act as sound barriers to reduce noise pollution.
Trees play a major role in helping to conserve the intensity of the Earth's magnetic field.
Trees beautify the landscape.
Found in the Prairie Creek Redwoods State Park in California, the oldest tree recognized is a Redwood known as Eternal God. The tree is believed to be 12,000 years old, although it is argued as being only 7,000 years old, which still makes it the oldest.
A White Cedar located in the Great Lakes area of Canada, has only grown to less than 4 inches tall during its 155 years.
In 1872, an Australian Eucalyptus at Watts River, Victoria in Australia was said to measure to 435 feet, but it is speculated that it probably measured to over 500 feet at some point in its life. The tallest living tree is a Coast Redwood known as the "Mendocino Tree" found in Montgomery State Reserve in California. This tree, which is over 1000 years old, is more than 367 feet and 6 inches tall and still growing.
The "Lindsey Creek Tree", a Coast Redwood with a minimum trunk volume of 90,000 cubic feet and a minimum total mass of 3630 tons was the most massive known tree until it blew over in a storm in 1905. The most massive living tree is "General Sherman", a giant sequoia found in the Sequoia National Park in California. It is 275 feet tall with a girth of 102 feet and 8 inches.
A Wild Fig tree at Echo Caves, near Ohrigstad, Mpumalanga, South Africa has roots reaching 400 feet making it the deepest a treeâ€™s roots have penetrated.
In 1974, it was noted that an Albizzia falcata in Sabah, Malaysia had grown 35 feet and 3 inches in 13 months: an approximate of 1.1 inches per day.
In the late 18th century a European Chestnut known as the Tree of the Hundred Horses on Mount Etna in Sicily, in Italy had a circumference of 190 feet. It has since separated into three parts.
The Manchineel Tree of the Caribbean coast and the Florida Everglades is a species that secretes an exceptionally poisonous and acid sap. Upon contact to the skin, a break out of blisters would occur. In the occasions where there is contact to the eye, a person can be blinded, and a bite of its fruit causes blistering and severe pain. This tree has been feared ever since the Spanish explorers came to the Americas in the 16th century.
There are about 20,000 tree species in the world. India has one of the largest tree treasuries in the world followed by the US.
No tree dies of old age. They are generally killed by insects, disease or by people. California Bristlecone Pines and Giant Sequoias are regarded as the oldest trees and have been known to live 4,000 to 5,000 years.
Trees grow from the top, not from the bottom as is commonly believed.
Trees receive an estimated 90% of their nutrition from the atmosphere and only 10% from the soil.
About one-half the weight of dry wood is carbon.
In ancient Mesopotamia (now Iraq), the value of wood was equal to that of precious gemstones and metals.
Romeâ€™s monetary system was based on silver which required huge quantities of wood to convert ore into metal.
Dendrochronology is the science of calculating a tree's age by its rings.
Tree rings provide precise information about environmental events, including volcanic eruptions.