A bees-eye view: How insects see flowers very differently to us By MICHAEL HANLON Last updated at 08:52 08 August 2007 To the human eye, a garden in bloom is a riot of colour. But of course, it is not our attention they need to attract, but that of insects, the perfect pollinating agents. And as these remarkable pictures show, there is more to many flowers than meets the eye - the human eye at least. The images, taken by Norwegian scientist-cameraman Bjorn Roslett, present a series of flowers in both natural and ultraviolet light, revealing an insect's eye view. Scroll down for more Ultraviolet light, invisible to us, uncovers colours and patterns which drawthem to the source of pollen and nectar - all hidden to humans without special equipment. This secret colour world was discovered in the Fifties and scientists realised that these distinct patterns were designed to act as "landing strips" or arrows, guiding the insects to the right spot. Because we cannot see UV light, the colours in these photographs are representational, but the patterns are real.
Introducción a los tejidos animales. Atlas de Histología Vegetal y Animal Un tejido (del latín texere = tejer) es un conjunto de células que cooperan para llevar a cabo una o varias funciones en un organismo. Estas células se relacionan entre sí mediante interacciones directas entre ellas o mediadas por la matriz extracelular. Distintos tejidos se asocian entre sí para formar los órganos. A pesar de que las células que forman un organismo son muy diversas en forma y función, los histólogos han clasificado tradicionalmente a los tejidos en cuatro tipos fundamentales: Tejidos epiteliales. Tejidos conectivos o conjuntivos. Tejido muscular. Tejido nervioso.
Resources, Animations, Interviews, + Tools :: DNA Learning Center We are enhancing our most popular resources by building collections around them. First up: Polymerase Chain Reaction! The DNA Learning Center has been developing multimedia animation programs since 1990. These popular programs feature some of the most common molecular processes such as PCR, sequencing, and DNA restriction. View online or download for play from your computer. Stunning three-dimensional visualizations of cellular and molecular processes. An interactive brain map that allows users to rotate the brain in three-dimensional space. Gene Screen is a fun way to learn how recessive genetic traits and diseases are inherited and find out which genetic diseases are more prevalent where your ancestors came from. Each year a select few scientists are recognized for their work by the Nobel Foundation. Join Dave Micklos, Jan Witkowski, and staff commentators for a lively discussion of DNA in the news from world-renowned Cold Spring Harbor Laboratory!
BBC Nature - Dinosaur gases 'warmed the Earth' 7 May 2012Last updated at 10:43 By Ella Davies Reporter, BBC Nature Apatosaurus, formerly known as Brontosaurus, produced a lot of wind Giant dinosaurs could have warmed the planet with their flatulence, say researchers. British scientists have calculated the methane output of sauropods, including the species known as Brontosaurus. By scaling up the digestive wind of horses, they estimate that the total population of dinosaurs, produced 520 million tonnes of gas annually. They suggest the gas could have been a key factor in the warm climate 150 million years ago. David Wilkinson from Liverpool John Moore's University, and colleagues from the University of London and the University of Glasgow published their results in the journal Current Biology. Sauropods, such as Apatosaurus louise (formerly known as Brontosaurus), were super-sized land animals that grazed on vegetation during the Mesozoic Era. Previous studies have suggested that the Earth was up to 10C (18F) warmer in the Mesozoic Era.
Luova - KISA: Murra biotekniikan myytti! KISA: Murra biotekniikan myytti! Oletko aina ihmetellyt jonkin huhun, sanonnan tai uskomuksen todenperäisyyttä? Niin olemme mekin Luovassa. Biotekniikan teemaviikon kunniaksi Luova järjestää kaikille nuorille avoimen Murra biotekniikan myytti! -kilpailun. Kilpailu pähkinänkuoressa Kilpailu on avoin kaikille 13-19-vuotiaille Osallistuminen vain digitaalisilla tiedostoilla (esim. pdf tai kuva) Osallistumisaika 1.9.2015 – 18.10.2015 Voittajat palkitaan Voittajajien nimet ja työt julkistetaan Luovassa osallistumisajan päätyttyä Infograafit ja posterit tulee olla itse tehtyjä ja mahdollisesti käytettyihin kuviin tulee tekijällä olla täydet käyttöoikeudet Infografiikkoja voidaan käyttää Helsingin yliopiston sekä LUMA-keskus Suomi -verkoston viestinnässä Kisaan osallistutaan lähettämällä posteri tai infograafi Luovan toimistukselle sähköpostitse (firstname.lastname@example.org) omien yhteystietojen kera. Klikkaa tästä lisätietoa kisasta Hei, Todella kiva kilpailu! — Marianne · 5 09 2015 - 09:11 · # Hei!
Ancient antibiotic-resistant bacteria found in isolated cave - Technology & Science The samples were collected from a part of Lechuguilla Cave in Carlsbad Cavern National Park in New Mexico that has been cut off from any input from the surface for four million to seven million years. (Max Wisshak/speleo-foto.de/McMaster University) Bacteria that have never before come in contact with humans, their diseases or their antibiotics, but are nevertheless resistant to a variety of antibiotics, have been discovered in a U.S. cave. "This supports a growing understanding that antibiotic resistance is natural, ancient," and an integral part of the genetic heritage of microbes, suggest researchers from McMaster University in Hamilton, Ont. and the University of Akron in Akron, Ohio, in a new study published this week in the journal PLoS ONE. Scientists have long debated the relative roles of humans and nature in the evolution and spread of antibiotic-resistant bacteria, which can pose a serious problem in the treatment of diseases. 2 new kinds of antibiotic resistance
How flu viruses gain the ability to spread -- ScienceDaily Flu viruses come in many strains, and some are better equipped than others to spread from person to person. Scientists have now discovered that the soft palate -- the soft tissue at the back of the roof of the mouth -- plays a key role in viruses' ability to travel through the air from one person to another. The findings, described in the Sept. 23 online edition of Nature, should help scientists better understand how the flu virus evolves airborne transmissibility and assist them in monitoring the emergence of strains with potential to cause global outbreaks. Researchers from MIT and the National Institute of Allergy and Infectious Diseases (NIAID) made the surprising finding while examining the H1N1 flu strain, which caused a 2009 pandemic that killed more than 250,000 people. The 2009 strain was very good at binding to human alpha 2-6 receptors. Airborne evolution The researchers are now trying to figure out how this reversion occurs, and why it happens in the soft palate.
Six-Legged Giant Finds Secret Hideaway, Hides For 80 Years : Krulwich Wonders... No, this isn't a make-believe place. It's real. They call it "Ball's Pyramid." What's more, for years this place had a secret. A satellite view of Ball's Pyramid in the Tasman Sea off the eastern coast of Australia. toggle caption Google Maps Here's the story: About 13 miles from this spindle of rock, there's a bigger island, called Lord Howe Island. On Lord Howe, there used to be an insect, famous for being big. Then one day in 1918, a supply ship, the S.S. Totally gone. There was a rumor, though. Some climbers scaling Ball's Pyramid in the 1960s said they'd seen a few stick insect corpses lying on the rocks that looked "recently dead." Climbing The Pyramid Fast forward to 2001, when two Australian scientists, David Priddel and Nicholas Carlile, with two assistants, decided to take a closer look. Where, they wondered, did that poop come from? The only thing to do was to go back up after dark, with flashlights and cameras, to see if the pooper would be out taking a nighttime walk.
All About The Human Genome Project (HGP) All About The Human Genome Project (HGP) The Human Genome Project (HGP) was one of the great feats of exploration in history - an inward voyage of discovery rather than an outward exploration of the planet or the cosmos; an international research effort to sequence and map all of the genes - together known as the genome - of members of our species, Homo sapiens. Completed in April 2003, the HGP gave us the ability, for the first time, to read nature's complete genetic blueprint for building a human being. In this section, you will find access to a wealth of information on the history of the HGP, its progress, cast of characters and future. A Quarter Century after the Human Genome Project's Launch: Lessons Beyond the Base Pairs October 1, 2015 marked the 25th anniversary of the launch of the Human Genome Project. Educational Resources Top of page General Information Research Model Organisms To view the PDFs on this page you will need Adobe Reader.