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Monsoon Failure Key to Long Droughts in Southwest
March 11, 2013 — Long-term droughts in the Southwestern North America often mean failure of both summer and winter rains, according to new tree-ring research. For the severe, multi-decadal droughts that occurred from ... > full story -
Pancakes With a Side of Math: A Physiological Model for Sap Exudation in Maple Trees
March 7, 2013 — The mechanisms behind sap exudation in sugar maple trees -- processes that trigger pressure differences causing sap to flow -- are a topic of much debate. In a new paper, researchers shed light on ... > full story -
Human Y Chromosome Much Older Than Previously Thought
March 5, 2013 — The discovery and analysis of an extremely rare African American Y chromosome push back the time of the most recent common ancestor for the Y chromosome lineage tree to 338,000 years ago. This time ... > full story -
Computer Programming
Computer Modeling
Computer Science
Artificial Intelligence
Math Puzzles
Mathematical Modeling
Short Algorithm, Long-Range Consequences
March 2, 2013 — A new technique for solving 'graph Laplacians' is drastically simpler than its predecessors, with implications for a huge range of practical ... > full story -
A Promising Fruit: The Tree Tomato
February 25, 2013 — Biologists are collaborating in the characterization of genetic resource of the tree tomato to enhance its cultivation and commercialization in Andean and Mediterranean ... > full story -
Turning Pine Sap Into 'Ever-Green' Plastics
February 20, 2013 — Scientists are developing new plastics that are “green” from the cradle to the grave. Given that the new polymers they are working on often come from pine trees, firs and other conifers, ... > full story -
Genetic Variation Controls Predation: Benefits of Being a Mosaic
February 19, 2013 — A genetically mosaic Eucalyptus tree is able to control which leaves are saved from predation because of alterations in its genes, finds a new study. Between two leaves of the same tree there can be ... > full story -
Phosphorus Starvation Linked to Symptoms of Citrus Disease Huanglongbing in New Study
February 19, 2013 — The citrus disease Huanglongbing is the most destructive disease threatening the citrus industry worldwide. Powerful diagnostic tools and management strategies are desired to control it. A new study ... > full story -
Tree-Ring Data Show History, Pattern to Droughts
February 17, 2013 — Researchers used more than 1,400 climate-sensitive tree-ring chronologies from multiple tree species across North America to reconstruct the Palmer drought severity index (PDSI), a widely used soil ... > full story -
Wetland Trees a Significant Overlooked Source of Methane
February 13, 2013 — Wetland trees are a significant overlooked source of the potent greenhouse gas methane, according to a new study. The study may help to resolve an ongoing controversy about the origins of methane in ... > full story
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