Mon Sep 09 16:13:11 UTC 2024: ## Scientists Discover a Third Category of Wood: “Midwood”
**Cambridge, UK** – Scientists have overturned a long-held assumption about tree classification, identifying a previously unknown category of wood they’ve dubbed “midwood”. This discovery, published in a recent study, has implications for understanding how trees store carbon and could aid in the fight against climate change.
For centuries, trees have been categorized as either softwoods (like pines and firs) or hardwoods (like oaks and maples). However, researchers at the Sainsbury Laboratory at Cambridge University, using cutting-edge low-temperature scanning electron microscopy, have uncovered a third category in the tulip tree.
The study revealed that the tulip tree, known for its exceptional carbon capture abilities, possesses a unique wood structure with macrofibril diameters falling between the range of softwoods and hardwoods. This “midwood” structure could explain the tulip tree’s exceptional carbon storage capacity.
“This is a completely unexpected discovery,” says Dr. Raymond Wightman, lead author of the study. “It challenges our understanding of how wood evolved and suggests there might be other, previously unidentified wood types out there.”
The researchers also studied the evolutionary history of wood, examining ancient flowering plants like Amborella trichopoda and Magnolia liliiflora. Their findings suggest that the switch from softwood to hardwood likely occurred during the evolution of magnolias.
This new understanding of wood evolution opens up exciting possibilities for identifying and exploiting plants with increased carbon storage potential. The study highlights the importance of botanical research and the critical role played by botanical gardens in uncovering new scientific insights.
“Next time you visit a botanic garden,” Dr. Wightman urges, “remember that there are still many mysteries hidden in the plant kingdom waiting to be discovered.”
The research, funded by The Gatsby Charitable Foundation, the National Science Centre Poland, and the University of Cambridge, has been published in the journal *Nature*.
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