Trees renew our air supply by absorbing carbon dioxide and producing oxygen.

Trees lower air temperature by evaporating water in their leaves.

A tree does not reach its most productive stage of carbon storage for about 10 years.

One of the tallest soft wood trees is the General Sherman, a giant redwood sequoia of California. General Sherman is about 275 ft or 84 m high with a girth of 25 ft or 8 m.

Dendrochronology is the science of calculating a tree’s age by its rings.

A mature birch tree can produce up to 1 million seeds per year.

Trees receive an estimated 90% of their nutrition from the atmosphere and only 10% from the soil.

Trees grow from the top, not from the bottom as is commonly believed. A branch’s location on a tree will only move up the trunk a few inches in 1000 years.

The largest area of forest in the tropics remains the Amazon Basin, amounting to 81.5 million acres.

Tree leaves help trap and remove tiny particles of soot and dust which otherwise damages human lungs.

By creating shade, trees moderate temperatures both globally and in the micro-climates of cities and counties.

Trees create buffers to reduce noise.

The presence of trees in urban neighborhoods has been linked to less crime.

Tree roots stabilize soil and prevent erosion.

The cottonwood tree seed is the seed that stays in flight the longest. The tiny seed is surrounded by ultra-light, white fluff hairs that can carry it on the air for several days.

Tree rings provide precise information about environmental events, including volcanic eruptions.

One acre of trees removes up to 2.6 tons of carbon dioxide each year.

Trees improve water quality by slowing and filtering rain water, as well as protecting aquifers and watersheds.