Plants Found to Send Nerve-Like Messages. PLANTS, unlike animals, have no nerves, so scientists have been jolted by the discovery this month that the tomato plant uses an electric signal to alert its defense system against grazing caterpillars.
Carnivorous plant. Trapping mechanisms Five basic trapping mechanisms are found in carnivorous plants.
Consciousness in a Cockroach. "You can use these flickers," van Swinderen tells me, "to extract what the fly is attending to.
At the moment," he says, "it's paying attention to the X. " Van Swinderen has inserted an electrode into the fly's brain to monitor its neural activity. The jagged brain waves percolating through the electrode scroll across a computer screen. Buried deep in the jumble of jagged peaks are two tiny signals: one wave rising and falling 12 times per second and another rising and falling 15 times per second. Cat Parasite Affects Everything We Feel and Do. Kevin Lafferty is a smart, cautious, thoughtful scientist who doesn't hate cats, but he has put forth a provocative theory that suggests that a clever cat parasite may alter human cultures on a massive scale.
His phone hasn't stopped ringing since he published one of the strangest research papers to come out of the mill in quite awhile. The parasite, Toxoplasma gondii, has been transmitted indirectly from cats to roughly half the people on the planet, and it has been shown to affect human personalities in different ways. Research has shown that women who are infected with the parasite tend to be warm, outgoing and attentive to others, while infected men tend to be less intelligent and probably a bit boring. But both men and women who are infected are more prone to feeling guilty and insecure. Idle Minds and What They May Say about Intelligence. Evolution of Old World fruit flies on three continents mirrors climate change.
Fast-warming climate appears to be triggering genetic changes in a species of fruit fly that is native to Europe and was introduced into North and South America about 25 years ago.
"This is a clear signal on three different continents that climate change is occurring, and that genetic change is going along with it," said Raymond Huey, a University of Washington biology professor who is co-author of a paper describing the findings, published Aug. 31 in Science Express, the online edition of the journal Science. No Fruit Fly Evolution Even after 600 Generations. Fish caught evolving into three different species - Technology & science - Science - DiscoveryNews.com. The King demoiselle is not just one type of fish, but three distinct groups that recently split from each other, according to a new study.
By essentially catching one species in the process of turning into three, the study suggests that conservation efforts might be failing a variety of species that have yet to be identified. "This work, along with others, is starting to show that there is a lot more biodiversity in the oceans then we previously thought," said Joshua Drew, a marine conservation biologist at the Field Museum of Natural History in Chicago. The Salamanders that Refuse to Grow Up. Horizontal and vertical: The evolution of evolution - life - 26 January 2010. JUST suppose that Darwin's ideas were only a part of the story of evolution.
Suppose that a process he never wrote about, and never even imagined, has been controlling the evolution of life throughout most of the Earth's history. It may sound preposterous, but this is exactly what microbiologist Carl Woese and physicist Nigel Goldenfeld, both at the University of Illinois at Urbana-Champaign, believe.
Darwin's explanation of evolution, they argue, even in its sophisticated modern form, applies only to a recent phase of life on Earth. At the root of this idea is overwhelming recent evidence for horizontal gene transfer - in which organisms acquire genetic material "horizontally" from other organisms around them, rather than vertically from their parents or ancestors. The donor organisms may not even be the same species. Cool Evolution Trick: Platinum Turns Baby Snails Into Slugs. Evolution doesn’t have to operate at a snail’s pace, even for snails.
In experiments designed to simulate the evolutionary transition that produced slugs, researchers exposed baby snails to the metal platinum, causing the animals to develop without external shells. The research illustrates how a big leap on the evolutionary path of animal body plans might have occurred. Green Sea Slug Is Part Animal, Part Plant. SEATTLE — It’s easy being green for a sea slug that has stolen enough genes to become the first animal shown to make chlorophyll like a plant.
Shaped like a leaf itself, the slug Elysia chlorotica already has a reputation for kidnapping the photosynthesizing organelles and some genes from algae. Now it turns out that the slug has acquired enough stolen goods to make an entire plant chemical-making pathway work inside an animal body, says Sidney K. Pierce of the University of South Florida in Tampa. The slugs can manufacture the most common form of chlorophyll, the green pigment in plants that captures energy from sunlight, Pierce reported January 7 at the annual meeting of the Society for Integrative and Comparative Biology. "Python Cave" Reveals Oldest Human Ritual, Scientists Suggest. December 22, 2006.
Modern behavior of early humans found half-million years earlier than previously thought. Evidence of sophisticated, human behavior has been discovered by Hebrew University of Jerusalem researchers as early as 750,000 years ago - some half a million years earlier than has previously been estimated by archaeologists. The discovery was made in the course of excavations at the prehistoric Gesher Benot Ya'aqov site, located along the Dead Sea rift in the southern Hula Valley of northern Israel, by a team from the Hebrew University Institute of Archaeology. Analysis of the spatial distribution of the findings there reveals a pattern of specific areas in which various activities were carried out.
This kind of designation indicates a formalized conceptualization of living space, requiring social organization and communication between group members. Such organizational skills are thought to be unique to modern humans. In the second area, identified evidence indicates a greater variation of activities - all of which took place in the vicinity of a hearth. Modern behavior of early humans found half-million years earlier than previously thought. Erratic Sunspots Smash NOAA Predictions. January 17, 2011, by Ken Jorgustin Permalink The current solar cycle (solar cycle 24) has confounded many observers, perhaps even the NOAA Solar Cycle Prediction Panel who had come to a consensus that the solar cycle presently underway would peak sometime during early 2013.
Lightning Makes Mushrooms Multiply. For generations, Japanese farmers have welcomed storms over their fields based on the belief that lightning strikes provoke plentiful harvests of mushrooms, which are staples of Japanese cuisine. (Related: "New Lightning Type Found Over Volcano? " ) Currently, mushroom demand is so high that dealers are increasingly turning to foreign suppliers. Japan imports about 50,000 tons of mushrooms a year, mainly from China and South Korea. Black Fungus Eats Harmful Radiation in Chernobyl.
Fungus living in the walls of a failed nuclear reactor in Chernobyl was found with high melanin content, implying it survived living under dangerous radiation. Fungus might be a possible food source in high-radiation places like outer space. Black fungus was found growing on the walls of Chernobyl’s damaged and highly radioactive nuclear reactor by robots sent to scour the area. A lightning strike in Africa helps take the pulse of the sun. Our Brains Are Shrinking. Are We Getting Dumber? Human 'dental chaos' linked to evolution of cooking - life - 19 February 2005. Crooked and disordered teeth may be the result of people having evolved to eat relatively mushy cooked food, suggests new research. Monkeys perform arithmetic as well as college students. Researchers at Duke University have demonstrated that monkeys have the ability to perform mental addition.
In fact, monkeys performed about as well as college students given the same test. The findings shed light on the shared evolutionary origins of arithmetic ability in humans and non-human animals, according to Assistant Professor Elizabeth Brannon, Ph.D. and Jessica Cantlon, Ph.D., of the Duke Center for Cognitive Neuroscience. Current evidence has shown that both humans and animals have the ability to mentally represent and compare numbers. Hearing radio frequencies « xcorr: computational neuroscience. Magnetic Microprocessors Could Enable the Most Efficient Computers Physically Possible. Electron-free magnetic microprocessors would use 1 million times less energy per flop than today's computers, according to researchers at the University of California-Berkeley.
They would be so efficient, they would consume the least amount of energy allowed by the second law of thermodynamics. For now, computers run on electricity, which means electrons moving around and generating waste heat. Researchers develop drug delivery system using nanoparticles triggered by electromagnetic field. Salmonella Spills its Secrets on the Space Shuttle. + Play Audio | + Download Audio | + Join mailing list. Physicists Convert Information Into Energy.
'Lifeless' prion proteins are 'capable of evolution' Rudimentary form of cellular "vision" 'Most beautiful' math structure appears in lab for first time - physics-math - 07 January 2010. 'Schrödinger's Hat' Uses Invisibility to Measure Quantum World. 'Junk' DNA gets credit for making us who we are - life - 19 March 2010.
DNA Phantom Effect. Blood Cells without DNA. DNA Molecules Display Telepathy-like Quality. Neurocardiology: The Brain in the Heart. Expand Your Mind: Getting a Grasp on Consciousness. Harmonic Resonance in the Brain. Face recognition ability inherited separately from IQ.