Brain Protein "Rescues" Neurons From Atrophy
...ites. The scientists allowed the treated slices to grow for 36 hours, then introduced a tracer that allowed them to see in great detail the structure of the tree-like neurons in the layers of visual cortex. The scientists found that each of the different neurotrophins caused certain layers of the cortex t...Heat-loving Microbe Repairs Its DNA With Light
...seorganisms require extremely high temperatures to grow andreproduce, and they have been recovered by microbiologists overthe past 25 years from various hot springs, undersea vents, andother geothermal environments. When its genetic material (DNA) is artificially damaged byultraviolet (UV) light, S. aci...Transgenic Rice Plants Resist Insects, Drought And Salt Damage
...hus, insects such as the pink stem borer eat less, grow less quickly, and plant damage is reduced to toler...akes them salt- and drought-resistant so that they grow in saline conditions and recover quickly from dry conditions. "These are capabilities that wild plan......fera type wines from vines that are much easier to grow in cold climates." Traminette descends from a cross between Joannes Seyve 23-416 and GewŸrztraminer made by Herb Barrett of the University of Illinois. Seed were planted by the Geneva breeding program in 1968. Reisch worked closely with the E...Photosystem I -- An Intermediate Step -- May Not Be Necessary For Plants
...ed they found that mutant algal cells were able to grow and survive in near-normal conditions. "No pun intended, but this sheds new light on photosynthesis," Greenbaum said. "This is speculation, but this could be a crude prototype of primordial photosynthesis." Wanting to know whether these organisms r...Bark Beetle Infestation Spurs Multifaceted Study
...ey were cut." Because many trees have rings that grow one per year or one per season,tree ring dating -- dendrochronology -- is often used to determine the ageof trees and their dates of cutting. Climate information, the history ofdroughts and wet periods, can also sometimes be garnered from the rings.A...Hibernation: The Opposite of Sleep?
...for days or even weeks, eventually the animal will grow so tired and sleepy that it must rewarm itself for a snooze." To aground squirrel, hibernation probably feels like long stretches of icy stupor punctuated with short, costly-naps--proof, Barnes says, thatsleep is precious indeed....Asian Beetle, New In This Country, Threatens Brooklyn's Shade Trees
ITHACA, N.Y. -- A tree won't grow in Brooklyn. Cornell University scientists have confirmed what they believe is the first known infestation of an Asian longhorned beetle, Anoplophora glabripennis, a large beetle that is attacking Brooklyn's horsechestnut and Norway maple tree popula...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...mple matter. While mature mahogany trees normally grow in thick woods, she has foundno evidence that new mahogany seedlings will successfully grow in the shadeof other trees -- mahogany trees included. Snook is deeply concerned about the "mahogan...End Of World Population Growth Projected For 21st Century
... East's 1995 population of151 million is likely to grow to 234 million by 2010 and to 517 million by 2050....t chance that the population of North America will grow to between 320million to 400 million by 2020. Toward the end of the next century, thepopulation may ...Gene Discovery Could Overcome Aluminum Barrier To Higher Wheat Yields Worldwide
...n rye that could help wheat, a major food staple, grow on millions of acres worldwide that are now hostil..., he added. World population, now 5.8 billion, may grow to more than 9 billion by the year 2046, according to estimates by the U.S. Bureau of the Census. Ot...North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
...th America before the impact, but not after, still grow in parts ofAustralia and South America. Modern relatives of these trees, often called"primitive conifers," include the Norfolk Island pine, Chilean monkey puzzleand Wollemi pine. "The basic point of the study is that we can determine the impact angl...Study Examines How Mechanisms Evolve To Regulate Bee Development
...ue pattern of behavioral development in which they grow upand mate. The same endocrine and genetic mechanisms involved in behavioral developmentof worker bees -- who tend the hive and, when older, forage -- exist inthe drones, researchers found. When the hormone level was elevated, dronesbegan to seek vi...KU Researcher Eyes The Rain Forest Through The Trees
... she said. "So it isn't any more cost-effective to grow them in that region than it would be to grow palm trees in Minnesota." Another reason for wanting to restore the native species is that though tr......rn to be shy and that the tendency persists asthey grow older. Signs of shyness in that study included clinging totheir mothers and hesitancy in speaking and joining other children atplay. Shy children responded to new situations with higher than averageheart rates, blood pressure and muscle tension as ...No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
...ilman. "Nitrogen pollution is a problem that will grow progressively worse as the human population rises unless we take direct steps to counter it."...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
...at all theextra herbivores, allowing the plants to grow and thrive. The UC Davis researchers found opposite results from the model predictionsfor the two-level food webs. "The crux of the model is that the numberof levels determines how energy moves through the food web, and we foundthe response was not ...Team Identifies Switch For Tumor Suppressor Gene
..., RB no longer knocks out these proteins,and cells grow out of control. "To grow correctly, a cell needs both a gas pedal and abrake pedal," says Ludlow. "The RB protein acts like t...NIH Team Discovers Endocrine Tumor Gene
...luences, all the brakes are gone and that cell can grow out of control, forming a tumor. That is what happens in MEN1, an inherited endocrine disorder that causes simultaneous, multiple tumors of the parathyroid and pituitary glands and of islet cells in the pancreas. Parathyroid and pituitary tumors are...Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...tsville, Ala."Plus, Atlanta is looking at where to grow over the next 20 years." Rapid Growth While 5th and 6th grade students take thermometers into parking lots and schoolyards to measure temperatures at noon,NASA will send its Lear 23 jet aircraft overhead to scan the area and map heat patterns in ...