Study show what makes plant cell walls compress and stretch

New findings about the building blocks of plant fibers open the door to advances in material engineering as well as food and agriculture, a Swedish-Australian research collaboration reported. The findings, published today ...

Households in 4 major cities report 'serious financial problems'

At least half of households in the four largest U.S. cities—New York , Los Angeles, Chicago, and Houston—report facing serious financial problems during the coronavirus outbreak. Their worries include depleting household ...

Computers help wood anatomists with wood identification

The most commonly used method for the taxonomic identification of tree trunks is wood anatomy. The number of experts in this area is decreasing, and education to become an wood anatomists takes many years. With the help of ...

Bamboozling the bark beetles

The forest is struggling to cope with the largest bark beetle plague in 70 years. While the trees are suffering due to the heat and the drought, the pests are proliferating rampantly in the warm weather: A pair of European ...

New method determines planetary regolith thermal conductivity

A new analytic model for calculating the effective thermal conductivity of planetary regolith allows scientists to better understand the connections between the physical and thermal properties of planetary surfaces and the ...

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Wood

Wood is an organic material; in the strict sense it is produced as secondary xylem in the stems of trees (and other woody plants). In a living tree it conducts water and nutrients to the leaves and other growing tissues, and has a support function, enabling woody plants to reach large sizes or to stand up for themselves. However, wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or wood chips or fiber.

People have used wood for millennia for many purposes, primarily as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. Wood can be dated by carbon dating and in some species by dendrochronology to make inferences about when a wooden object was created. The year-to-year variation in tree-ring widths and isotopic abundances gives clues to the prevailing climate at that time.

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