Potential renewable energy resources
Energy crops, like switchgrass or fast-growing trees, could provide more than 5,000 megawatts of electricity annually by the year 2010, supporting more than 170,000 jobs and diversifying local farming operations.
Energy crops, like switchgrass or fast-growing trees, could provide more than 5,000 megawatts of electricity annually by the year 2010, supporting more than 170,000 jobs and diversifying local farming operations.
In 1990 in California alone, wind power offset the emission of more than 2.5 billion pounds of carbon dioxide and 15 million pounds of other pollutants - the same amount of air quality provided by more than 150 million trees.
A single tree in a rainforest can be home to thousands of different creatures.
A 379.1' Redwood in Redwood National Park is currently the world's largest tree
Can't see the morons for the trees Illinois State University has cleared away the trees in front of Stevenson Hall so they can begin construction of the sculptured centerpiece of its Fell
Arboretum, an area set aside for the preservation and study of trees.
Sharks have been around for more than 400 million years, so they're older than trees, which appeared roughly 350 million years ago.
Vervet monkeys use different alarm calls for leopards, eagles, and snakes, and other vervets react to each call in the right way, like climbing trees or looking up.
Chimpanzees build a fresh sleeping nest in the trees almost every night by bending and weaving branches and leaves together.
The brown tree snake was accidentally brought to Guam around WWII and wiped out most of the island's native forest birds, one of the worst invasive species disasters ever recorded.
The sun bear of Southeast Asia is the smallest bear species and has an extremely long tongue for slurping honey and insects out of trees.
During the Industrial Revolution, soot darkened trees in England, and dark-colored peppered moths became more common because they were better camouflaged, a famous example of natural selection.
On April Fools' Day in 1957, the BBC aired a fake report showing Swiss farmers harvesting spaghetti from trees, and many viewers believed it.
The tallest known tree in the world is a coast redwood in California named Hyperion, which stands about 380 feet tall.
Prometheus was a Great Basin bristlecone pine in Nevada, about 4,900 years old when it was cut down in 1964.
Washington, DC's famous cherry trees were a gift from the mayor of Tokyo in 1912.
Madrid's famous statue of a bear and a strawberry tree is the city's symbol.
Bananas don't grow on trees. The banana plant is technically a giant herb, and its "trunk" is made of tightly packed leaf stalks.
Apples originated in the mountains of Kazakhstan, where wild apple trees still grow, and the city of Almaty's name is linked to the word for apple.
Apple seeds don't grow into the same variety as their parent, so apple growers use grafting to produce trees of the same type.
The apple tree said to have inspired Isaac Newton's ideas about gravity still grows at his childhood home, Woolsthorpe Manor, in England.
All navel oranges are clones from a single mutated tree in Brazil, and one of the original parent trees planted in Riverside, California, in 1873 is still alive.
Mango trees can live for hundreds of years.
Avocados don't ripen on the tree.
All Hass avocados descend from a single tree planted by Rudolph Hass in La Habra, California, in 1926.
Lemon trees can produce fruit year-round.
The story of George Washington chopping down a cherry tree is a myth invented by biographer Parson Weems.
Itoh peonies are hybrids of tree peonies and herbaceous peonies.
"Moon trees" were grown from seeds that orbited the Moon on Apollo 14.
The "Old Man of the Lake" is a tree stump that has floated upright in Crater Lake since at least 1896.
Portland is nicknamed "Stumptown" because of the tree stumps left after rapid logging.
The Oregon Dunes have "tree islands," patches of forest surrounded by sand.