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Extinct Tree From Christ's Time Rises From the Dead
Scientists have grown a tree from what may be the oldest seed ever germinated.
Scientists have grown a tree from what may be the oldest seed ever germinated.
Plant Biology
Source: LiveScience
Posted on: Friday, Jun 13, 2008, 9:50am
Rating: | Views: 1819 | Comments: 0
Source: LiveScience
Posted on: Friday, Jun 13, 2008, 9:50am
Rating: | Views: 1819 | Comments: 0
Centromeres cross over, a lot 
Recombination at centromeres is higher than anywhere else on the chromosome, even though methyltransferases do their best to prevent it, say Jaco et al., as published in the June 16 issue of the Journal of Cell Biology.
Recombination at centromeres is higher than anywhere else on the chromosome, even though methyltransferases do their best to prevent it, say Jaco et al., as published in the June 16 issue of the Journal of Cell Biology.
Development
Source: Rockefeller University Press
Posted on: Thursday, Jun 12, 2008, 11:41am
Rating: | Views: 1185 | Comments: 0
Source: Rockefeller University Press
Posted on: Thursday, Jun 12, 2008, 11:41am
Rating: | Views: 1185 | Comments: 0
Study: Marijuana Potency Increases in 2007
Powerful pot poses new health problems for drug many see as harmless.
Powerful pot poses new health problems for drug many see as harmless.
Plant Biology
Source: ABC News
Posted on: Thursday, Jun 12, 2008, 9:32am
Rating: | Views: 1407 | Comments: 0
Source: ABC News
Posted on: Thursday, Jun 12, 2008, 9:32am
Rating: | Views: 1407 | Comments: 0
Tree leaves control their own temperature
The temperature inside a healthy, photosynthesizing tree leaf is affected less by outside environmental temperature than originally believed, according to new research from biologists at the University of Pennsylvania.
The temperature inside a healthy, photosynthesizing tree leaf is affected less by outside environmental temperature than originally believed, according to new research from biologists at the University of Pennsylvania.
Plant Biology
Source: University of Pennsylvania
Posted on: Wednesday, Jun 11, 2008, 12:46pm
Rating: | Views: 20571 | Comments: 0
Source: University of Pennsylvania
Posted on: Wednesday, Jun 11, 2008, 12:46pm
Rating: | Views: 20571 | Comments: 0
Hox genes control the path of neurons responsible for development of the nervous system
How pontine neurons make the journey across the brain has, until now, been somewhat of a mystery. In a new paper published this week in the open-access journal PLoS Biology, authors Filippo Rijli and colleagues demonstrate that pontine neuron migration in mice is controlled by specific Hox genes.
How pontine neurons make the journey across the brain has, until now, been somewhat of a mystery. In a new paper published this week in the open-access journal PLoS Biology, authors Filippo Rijli and colleagues demonstrate that pontine neuron migration in mice is controlled by specific Hox genes.
Neuroscience
Source: Public Library of Science
Posted on: Tuesday, Jun 10, 2008, 8:50am
Rating: | Views: 1599 | Comments: 0
Source: Public Library of Science
Posted on: Tuesday, Jun 10, 2008, 8:50am
Rating: | Views: 1599 | Comments: 0
ADHD an advantage for nomadic tribesmen?
A propensity for attention deficit hyperactivity disorder (ADHD) might be beneficial to a group of Kenyan nomads, according to new research published in the open access journal BMC Evolutionary Biology.
A propensity for attention deficit hyperactivity disorder (ADHD) might be beneficial to a group of Kenyan nomads, according to new research published in the open access journal BMC Evolutionary Biology.
Evolution
Source: BioMed Central
Posted on: Monday, Jun 09, 2008, 7:06pm
Rating: | Views: 3161 | Comments: 0
Source: BioMed Central
Posted on: Monday, Jun 09, 2008, 7:06pm
Rating: | Views: 3161 | Comments: 0
Diet prior to pregnancy determines sheep's gender
Maternal diet influences the chances of having male or female offspring. Research published today in BioMed Central's open access journal Reproductive Biology and Endocrinology has demonstrated that ewes fed a diet enriched with polyunsaturated fats for one month prior to conception have a significantly higher chance of giving birth to male offspring.
Maternal diet influences the chances of having male or female offspring. Research published today in BioMed Central's open access journal Reproductive Biology and Endocrinology has demonstrated that ewes fed a diet enriched with polyunsaturated fats for one month prior to conception have a significantly higher chance of giving birth to male offspring.
Genetics
Source: BioMed Central
Posted on: Monday, Jun 09, 2008, 8:50am
Rating: | Views: 1131 | Comments: 0
Source: BioMed Central
Posted on: Monday, Jun 09, 2008, 8:50am
Rating: | Views: 1131 | Comments: 0
Unique Acoustic System Protects Manatees from Injuries and Death
Researchers at Harbor Branch Oceanographic Institute at Florida Atlantic University have developed a unique acoustic system to keep manatees from being injured or killed by flood gates and boat locks. The system is composed of an array of unique acoustic transmitters and receivers that provide non-contact detection of manatees as they pass through the gates of the lock in rivers and canals.
Researchers at Harbor Branch Oceanographic Institute at Florida Atlantic University have developed a unique acoustic system to keep manatees from being injured or killed by flood gates and boat locks. The system is composed of an array of unique acoustic transmitters and receivers that provide non-contact detection of manatees as they pass through the gates of the lock in rivers and canals.
Marine Biology
Source: Newswise
Posted on: Thursday, Jun 05, 2008, 9:04am
Rating: | Views: 1277 | Comments: 0
Source: Newswise
Posted on: Thursday, Jun 05, 2008, 9:04am
Rating: | Views: 1277 | Comments: 0
Slideshow: Trees as you've never seen them before
A new exhibition features vividly coloured electron microscope images of fruits, pollen and leaves.
A new exhibition features vividly coloured electron microscope images of fruits, pollen and leaves.
Plant Biology
Source: New Scientist
Posted on: Wednesday, Jun 04, 2008, 8:54am
Rating: | Views: 1143 | Comments: 0
Source: New Scientist
Posted on: Wednesday, Jun 04, 2008, 8:54am
Rating: | Views: 1143 | Comments: 0
Researchers identify proteins making up mechanosensitive ion channels
Researchers at Washington University in St. Louis are the first to identify two proteins responsible for mechanosensitive ion channel activities in plant roots. Scientists have long known that plant cells respond to physical forces. Until now, however, the proteins controlling the ion channel response remained a mystery.
Researchers at Washington University in St. Louis are the first to identify two proteins responsible for mechanosensitive ion channel activities in plant roots. Scientists have long known that plant cells respond to physical forces. Until now, however, the proteins controlling the ion channel response remained a mystery.
Plant Biology
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 10:55am
Rating: | Views: 1167 | Comments: 0
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 10:55am
Rating: | Views: 1167 | Comments: 0
A molecular switch turns on the flame in 'nature's blowtorch'
Uncontrolled reaction of organic compounds with oxygen is easy: we call it fire. But nature often needs to do oxidations very specifically, adding oxygen to a particular carbon atom in a complicated molecule without disturbing anything else.
Uncontrolled reaction of organic compounds with oxygen is easy: we call it fire. But nature often needs to do oxidations very specifically, adding oxygen to a particular carbon atom in a complicated molecule without disturbing anything else.
Biochemistry
Source: EurekAlert
Posted on: Friday, May 30, 2008, 10:02am
Rating: | Views: 1240 | Comments: 0
Source: EurekAlert
Posted on: Friday, May 30, 2008, 10:02am
Rating: | Views: 1240 | Comments: 0
Molecular Snapshot of a Virulence Factor on Bacterial Surface
David G. Thanassi, Ph.D., of Stony Brook University, and colleagues are the first to capture a view of proteins during translocation across the bacterial outer membrane. This “molecular snapshot” may enlighten scientists to the protein secretion process across membranes and provide a foundation to understanding certain bacterial virulence factors that allow bacteria to cause disease.
David G. Thanassi, Ph.D., of Stony Brook University, and colleagues are the first to capture a view of proteins during translocation across the bacterial outer membrane. This “molecular snapshot” may enlighten scientists to the protein secretion process across membranes and provide a foundation to understanding certain bacterial virulence factors that allow bacteria to cause disease.
Biochemistry
Source: Newswise
Posted on: Thursday, May 29, 2008, 10:38am
Rating: | Views: 1283 | Comments: 0
Source: Newswise
Posted on: Thursday, May 29, 2008, 10:38am
Rating: | Views: 1283 | Comments: 0
Skin defects set off alarm with widespread and potentially harmful effects
When patches of red, flaky and itchy skin on newborn mice led rapidly to their deaths, researchers at Washington University School of Medicine in St. Louis looked for the reason why. What they found was a molecular alarm system that serves as a sentinel to monitor the integrity of skin — the body's essential protective barrier.
When patches of red, flaky and itchy skin on newborn mice led rapidly to their deaths, researchers at Washington University School of Medicine in St. Louis looked for the reason why. What they found was a molecular alarm system that serves as a sentinel to monitor the integrity of skin — the body's essential protective barrier.
Health
Source: EurekAlert
Posted on: Wednesday, May 28, 2008, 9:00am
Rating: | Views: 1134 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 28, 2008, 9:00am
Rating: | Views: 1134 | Comments: 0
Research reveals molecular fingerprint of cocaine addiction
The first large-scale analysis of proteins in the brains of monkeys addicted to cocaine reveals new information on how long-term cocaine use changes the amount and activity of various proteins affecting brain function.
The first large-scale analysis of proteins in the brains of monkeys addicted to cocaine reveals new information on how long-term cocaine use changes the amount and activity of various proteins affecting brain function.
Neuroscience
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1135 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1135 | Comments: 0
When plants 'think' alike
Biologists have discovered that a fundamental building block in the cells of flowering plants evolved independently, yet almost identically, on a separate branch of the evolutionary tree--in an ancient plant group called lycophytes that originated at least 420 million years ago.
Biologists have discovered that a fundamental building block in the cells of flowering plants evolved independently, yet almost identically, on a separate branch of the evolutionary tree--in an ancient plant group called lycophytes that originated at least 420 million years ago.
Plant Biology
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1137 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1137 | Comments: 0
Researchers identify leukemia stem cells
Stem cell researchers at UCLA have identified a type of leukemia stem cell and uncovered the molecular and genetic mechanisms that cause a normal blood stem cells to become cancerous.
Stem cell researchers at UCLA have identified a type of leukemia stem cell and uncovered the molecular and genetic mechanisms that cause a normal blood stem cells to become cancerous.
Stem cells
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 8:30am
Rating: | Views: 1106 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 8:30am
Rating: | Views: 1106 | Comments: 0
Saltwater sleuths: Seeking clues to help determine the ages of fish and shellfish populations
Fishery biologist Sandy Sutherland looks through the lens of the microscope at tiny sections of fish earbones, known as otoliths, each showing annual bands of growth. She carefully counts the bands to determine the age of the fish, then moves on to the next sample.
Fishery biologist Sandy Sutherland looks through the lens of the microscope at tiny sections of fish earbones, known as otoliths, each showing annual bands of growth. She carefully counts the bands to determine the age of the fish, then moves on to the next sample.
Marine Biology
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 11:10am
Rating: | Views: 1181 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 11:10am
Rating: | Views: 1181 | Comments: 0
How can we measure the emotional states of animals?
Rats housed in standard conditions show a stronger response to the loss of an expected food reward than those housed in enriched conditions, perhaps indicating a more negative emotional state, according to new research by scientists at Bristol University Veterinary School, published in this week's issue of Royal Society Biology Letters.
Rats housed in standard conditions show a stronger response to the loss of an expected food reward than those housed in enriched conditions, perhaps indicating a more negative emotional state, according to new research by scientists at Bristol University Veterinary School, published in this week's issue of Royal Society Biology Letters.
Animal Behavior
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1209 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1209 | Comments: 0
Scientists discover a molecular scaffold that guides connections between brain cells
Brain cells known as neurons process information by joining into complex networks, transmitting signals to each other across junctions called synapses. But “neurons don’t just connect to other neurons,” emphasizes Z. Josh Huang, Ph.D., “in a lot of cases, they connect to very specific partners, at particular spots.”
Brain cells known as neurons process information by joining into complex networks, transmitting signals to each other across junctions called synapses. But “neurons don’t just connect to other neurons,” emphasizes Z. Josh Huang, Ph.D., “in a lot of cases, they connect to very specific partners, at particular spots.”
Neuroscience
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1133 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1133 | Comments: 0
Incense is psychoactive: Scientists identify the biology behind the ceremony
Religious leaders have contended for millennia that burning incense is good for the soul. Now, biologists have learned that it is good for our brains too.
Religious leaders have contended for millennia that burning incense is good for the soul. Now, biologists have learned that it is good for our brains too.
Neuroscience
Source: EurekAlert
Posted on: Tuesday, May 20, 2008, 11:18am
Rating: | Views: 20873 | Comments: 2
Source: EurekAlert
Posted on: Tuesday, May 20, 2008, 11:18am
Rating: | Views: 20873 | Comments: 2
Climbing ivy reveals secret 'superglue'
Darwin once puzzled over how ivy sticks to walls so effortlessly now researchers have discovered its nanoscale trick
Darwin once puzzled over how ivy sticks to walls so effortlessly now researchers have discovered its nanoscale trick
Plant Biology
Source: New Scientist
Posted on: Tuesday, May 20, 2008, 11:18am
Rating: | Views: 1471 | Comments: 0
Source: New Scientist
Posted on: Tuesday, May 20, 2008, 11:18am
Rating: | Views: 1471 | Comments: 0
Teaching evolution: Legal victories aren't enough
In a new essay published in the open-access journal PLoS Biology, political scientist Michael Berkman and his colleagues show that despite these many legal victories, a surprising number of public high school biology teachers still include creationism or intelligent design in their curriculum.
In a new essay published in the open-access journal PLoS Biology, political scientist Michael Berkman and his colleagues show that despite these many legal victories, a surprising number of public high school biology teachers still include creationism or intelligent design in their curriculum.
Evolution
Source: EurekAlert
Posted on: Tuesday, May 20, 2008, 8:06am
Rating: | Views: 1228 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 20, 2008, 8:06am
Rating: | Views: 1228 | Comments: 0
Ancient deep-sea coral reefs discovered off southeastern US
Largely unexplored deep-sea coral reefs, some perhaps hundreds of thousands of years old, off the coast of the southeastern U.S. are not only larger than expected but also home to commercially valuable fish populations and many newly discovered and unusual species.
Largely unexplored deep-sea coral reefs, some perhaps hundreds of thousands of years old, off the coast of the southeastern U.S. are not only larger than expected but also home to commercially valuable fish populations and many newly discovered and unusual species.
Marine Biology
Source: EurekAlert
Posted on: Monday, May 19, 2008, 8:21am
Rating: | Views: 1327 | Comments: 0
Source: EurekAlert
Posted on: Monday, May 19, 2008, 8:21am
Rating: | Views: 1327 | Comments: 0
Biotech companies rush to patent plant genes
Activists fear that blanket patents could stifle independent crop research.
Activists fear that blanket patents could stifle independent crop research.
Plant Biology
Source: Nature
Posted on: Monday, May 19, 2008, 8:20am
Rating: | Views: 1191 | Comments: 0
Source: Nature
Posted on: Monday, May 19, 2008, 8:20am
Rating: | Views: 1191 | Comments: 0
Larger horns a gamble for young Soay sheep
When it comes to winning mates, larger horns are an asset for male Soay sheep. But those that grow them may be putting their young lives on the line, according to a study published online on May 15th in Current Biology, a publication of Cell Press.
When it comes to winning mates, larger horns are an asset for male Soay sheep. But those that grow them may be putting their young lives on the line, according to a study published online on May 15th in Current Biology, a publication of Cell Press.
Evolution
Source: EurekAlert
Posted on: Thursday, May 15, 2008, 11:50am
Rating: | Views: 1200 | Comments: 0
Source: EurekAlert
Posted on: Thursday, May 15, 2008, 11:50am
Rating: | Views: 1200 | Comments: 0
Learning from death
Vishva Dixit's study of cellular demise led to the discovery of a new molecular-signalling mechanism — one with implications for inflammation and perhaps much more, reports Melinda Wenner.
Vishva Dixit's study of cellular demise led to the discovery of a new molecular-signalling mechanism — one with implications for inflammation and perhaps much more, reports Melinda Wenner.
Immunology
Source: Nature
Posted on: Thursday, May 15, 2008, 10:16am
Rating: | Views: 1532 | Comments: 0
Source: Nature
Posted on: Thursday, May 15, 2008, 10:16am
Rating: | Views: 1532 | Comments: 0
Molecular 'clock' could predict risk for developing breast cancer
A chemical reaction in genes that control breast cancer provides a molecular clock that could one day help researchers more accurately determine a woman’s risk for developing breast cancer and provide a new approach for treatment, UT Southwestern Medical Center researchers have found.
A chemical reaction in genes that control breast cancer provides a molecular clock that could one day help researchers more accurately determine a woman’s risk for developing breast cancer and provide a new approach for treatment, UT Southwestern Medical Center researchers have found.
Cancer
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:51am
Rating: | Views: 1133 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:51am
Rating: | Views: 1133 | Comments: 0
Shrimps see beyond the rainbow
A Swiss marine biologist and an Australian quantum physicist have found that a species of shrimp from the Great Barrier Reef, Australia, can see a world invisible to all other animals.
A Swiss marine biologist and an Australian quantum physicist have found that a species of shrimp from the Great Barrier Reef, Australia, can see a world invisible to all other animals.
Marine Biology
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:50am
Rating: | Views: 1284 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:50am
Rating: | Views: 1284 | Comments: 0
Chemical compound prevents cancer in lab
While researching new ways to stop the progression of cancer, researchers at the University of Oklahoma Health Sciences Center, have discovered a compound that has shown to prevent cancer in the laboratory. The research appears in the journal Gene Regulation and Systems Biology.
While researching new ways to stop the progression of cancer, researchers at the University of Oklahoma Health Sciences Center, have discovered a compound that has shown to prevent cancer in the laboratory. The research appears in the journal Gene Regulation and Systems Biology.
Cancer
Source: EurekAlert
Posted on: Tuesday, May 13, 2008, 2:28pm
Rating: | Views: 1172 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 13, 2008, 2:28pm
Rating: | Views: 1172 | Comments: 0
Too hot to handle! Scientists identify heat sensing regulator
Neuroscientists at Johns Hopkins are a step closer to understanding pain sensitivity - specifically why it’s variable instead of constant - having identified a gene that regulates a heat-activated molecular sensor.
Neuroscientists at Johns Hopkins are a step closer to understanding pain sensitivity - specifically why it’s variable instead of constant - having identified a gene that regulates a heat-activated molecular sensor.
Neuroscience
Source: EurekAlert
Posted on: Tuesday, May 13, 2008, 10:08am
Rating: | Views: 1124 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 13, 2008, 10:08am
Rating: | Views: 1124 | Comments: 0
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