Giant sequoia is world's biggest tree
Dating back to around 200 B.C., and over 83 metres tall, the largest tree in the world can be found in Californian's Sequoia National Park. It is called the "General Sherman Tree" and is a giant sequoia. Giant sequoias do not grow as tall as redwoods do, but their trunks are much larger. Some of their trunks measure 30 metres around at the base! The name "sequoia" comes from the name of a Cherokee Indian who invented a written alphabet for his native language.
World's tallest tree named
New measurements taken in March of an extremely old redwood tree in the Montgomery Woods in Northern California have found it to be 112.08 meters tall (367.72 ft), officially making it the tallest living thing in the world. The giant tree is called "the Mendocino Tree" and is believed to be between 600 and 800 years old.
Israeli researchers say
Israeli scientists have developed a way to use a gene known as CBD to accelerate the growth of plants and trees. The researchers who want to help market the product hope that the gene can be used to restore rainforests and aid in producing food for the world's growing population.

Scientist's research on the DNA of trees bad news for thieves
Thieves can make thousands of dollars by illegally cutting down trees and stealing them, and until recently, the RCMP and forestry officials have had a difficult time catching the suspects or even having enough evidence to convict known suspects. Thanks to Eleanor White, a federal government biologist, and her ground-breaking research in molecular biology, samples of tree DNA can now be used to track down stolen lumber and prove what tree it came from.
    The tallest trees in the world are (1) the coasta                                  Paper can only be recycled 3 times,
     redwoods of California, (2) Mt. Ash, a eucalypt from                           because fibres get shorter and weaker
     southeastern Australia, and (3) the Douglas-fir and                             each time the paper is recycled.
     Sitka spruce trees of British Columbia and Washington State.                                                                                               
Beetles killing California oaks
An infestation of beetles is killing Northern California oaks. Two types of beetles are the culprits, the Western oak bark beetle and the oak ambrosia beetle. The Western oak bark beetle burrows under the bark of trees until the bark falls off, and the oak ambrosia beetle leaves deadly fungus along its tunnels within the tree. Researchers are unsure why these infestations are occurring, but suggest that climate change has weakened the trees that the beetles are targeting.
Life on the edge
A number of scientists are conducting research in the Australian rainforest to try and determine the role of ecology in the evolution and biological diversity of rainforests. These scientists believe that ecological change, rather than the geographical separation of populations, might be responsible for the development of new species. The scientists' theory is that ecological change causes organisms to adapt to new conditions. This ultimately leads to evolutionary change. Further research based on this theory is planned, with particular emphasis on examining the edges of rainforests where they meet the savannah.
Building a better forest
Research is currently being conducted into helping the forest industry build better forests after logging. James Ehnes, a botanist, is examining how vegetation grows back in areas burned by forest fires and comparing his findings to areas left after logging. He has already discovered that burnt soil is generally more fertile than logged soil. Forest fires are a natural part of the forest ecology, and some types of forests will actually start to become unhealthy after going too long without a fire. Researchers are now experimenting with imitating some of the aspects of a fire that are thought to contribute to forest health, and applying them to logging practices.
The arbutus tree is the only native evergreen broadleaf in Canada.                The roots of many trees stretch out four to seven times                           It is also known as the Madrone (Strawberry Tree)  or Naked Indian                  farther than their leafy branches.                                  
Devastating diversity                                                                                                                           
New forms of the Dutch elm fungus, which is carried by beetles who burrow beneath the bark of elm trees, are combining and are making it more difficult to combat the disease. The original fungus spread from Europe to North America and Central Asia in the 1920's and 30's. Now, the North American form and the European form have met in Central Europe. Not knowing how this new form of the Dutch elm fungus will develop makes breeding disease-resistant elms very difficult.
Treatment has promise against Dutch elm disease
Most of Canada's elm trees have been killed over the years by the tiny bark beetle, which carries a fungus that infects the tree. Recently, however, a pathologist in Toronto has discovered a non-toxic compound that may save the trees. This is extremely good news for places like Winnipeg, Saskatoon and Regina, where the tree is one of few that can survive the harsh winters and provide large amounts of shade in the summers. The compound would be injected into elm trees and would stimulate the tree's own natural immune system.
A radical plan to preserve the beloved elm
A project to breed an elm tree that is naturally resistant to Dutch elm disease has begun at the University of Guelph's Arboretum. Dutch elm disease is a fungus which is carried from tree to tree by the bark beetle, and is deadly to elms. The researchers hope that they can develop trees which can naturally produce high enough levels of anti-fungal compounds called phytoalexins that they can survive the disease. The project is expected to take about thirty years.
Tree Bugs
Foresters in Paris are placing computer chips into trees which will hold data on the tree's age, health and location. Chips will be placed in 90,000 trees throughout the city

Very Special Trees

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