BBC Nature - Adaptations and behaviours evolution ARKive - Discover the world's most endangered species Wildscreen's Arkive project was launched in 2003 and grew to become the world's biggest encyclopaedia of life on Earth. With the help of over 7,000 of the world’s best wildlife filmmakers and photographers, conservationists and scientists, Arkive.org featured multi-media fact-files for more than 16,000 endangered species. Freely accessible to everyone, over half a million people every month, from over 200 countries, used Arkive to learn and discover the wonders of the natural world. Since 2013 Wildscreen was unable to raise sufficient funds from trusts, foundations, corporates and individual donors to support the year-round costs of keeping Arkive online. Therefore, the charity had been using its reserves to keep the project online and was unable to fund any dedicated staff to maintain Arkive, let alone future-proof it, for over half a decade. Therefore, a very hard decision was made to take the www.arkive.org website offline in February 2019.
DNA from the Beginning - An animated primer of 75 experiments that made modern genetics. Galapagos: Livets början Galápagosöarnas unika växt- och djurliv fascinerade Charles Darwin innan han skrev sin bok om arternas uppkomst och dagens vetenskapsmän fortsätter att göra unika upptäckter när de utforskar ögruppens evolutionära historia. David Attenborough berättar historien om hur den lilla ögruppen mitt ute i Stilla havet skapades ur havet för fyra miljoner år sedan och utvecklade en fascinerande flora och fauna och endemiska djurarter. Här kan du skapa egna klipp ur programmet Hjälp Stäng 1. Se en film om hur man skapar klipp. DelaKopiera länken genom att trycka ctrl+C på PC eller cmd+C på Mac.
Cell Models For life all cells have basic needs. Cells have diverged in their structure and function to accommodate these survival requirements. Here are some KEY TERMS to help you think, explore and search for similarities and significant differences that have become the characteristics of eukaryote (animal, plant) and prokaryotic (bacteria) cells. Examples might be searching: eukaryote prokaryote reproduction or animal plant cell energy. Reproduction / cell division Energy trapping, storage and consumption Form / shape / structure Cell specialization Compartmentalization of cell functions Communication within and beyond the cell Cell / organism survival Arctic Unit Week 1 This was meant to be our first January unit, but lack of routine and school was getting to us so we went ahead and started a week early. First we looked for the Arctic Circle on our globe and talked about the different countries that make up the Arctic land. I pointed out the Arctic Ocean. (We haven’t really talked about the names of the oceans yet. Does anyone have a good song for that?) I printed out a few Arctic Animal Bingo and by printing the bingo ball cards twice we could play memory as well. because they gave concise information about each animal. I printed them out and paired the information card with my own Arctic animal nomenclature cards. I much prefer having real photographs of the animals. We have been reading lots of books about the Arctic and about polar bears. We talked about camouflage and why animals in the Arctic tend to be white. We experienced how blubber keeps a polar bear warm. I printed out an early reader from Enchanted Learning called How Many Arctic Animals.
Charles Darwin | Allt om Historia Under en världsomsegling insåg Charles Darwin hur livet på jorden hade utvecklats. Hans teori om evolutionen var lika enkel som genial, men kastade samtidigt Bibelns skapelseberättelse över ända och mötte hårt motstånd. Text: Anna Larsdotter I augusti 1831 fick Charles Darwin ett brev som skulle förändra hans liv. Avsändare var hans vän John Stevens Henslow, professor i botanik i Cambridge. Av Henslow hade Darwin lärt sig massor om sitt stora intresse: djur och växter. I brevet frågade Henslow om Darwin ville följa med på en forskningsseglats runt jorden. Så gav sig Charles Robert Darwin den 27 december 1831 av på sitt livs resa. Darwin växte upp med en äldre bror och fyra systrar. Charles Darwin var inte av riktigt samma skrot och korn som sin far och farfar. Han hade lärt sig att stoppa upp djur och byggt upp en imponerande samling skalbaggar. Darwin fascinerades av de arter han hittade på ögruppen. Darwins anteckningar från resan med Beagle var fyllda av entusiastiska utrop.
Charles Darwin Hunt for alien spacecraft begins, as planet-spotting scientist Geoff Marcy gets funding Artist rendering of alien spaceship Photo: Ray Edgar In the field of planet hunting, Geoff Marcy is a star. After all, the astronomer at the University of California at Berkeley found nearly three-quarters of the first 100 planets discovered outside our solar system. He's not kidding - and now he has the funding to do it. If intelligent life is common in the galaxy, "where is everybody?" Last fall, the Templeton Foundation, a philanthropic organisation dedicated to investigating what it calls the "big questions" - which, unsurprisingly, include "Are we alone?" What astronomer Geoff Marcy doesn't hope to find: A Death Star Photo: Wookieepedia As far as Marcy, an official NASA researcher for the Kepler mission, is concerned, that question has a clear answer: "The universe is simply too large for there not to be another intelligent civilisation out there. Advertisement "It's a heartbreaker," he says. Successful so far Kepler has been wildly successful in its four years. The concept is simple.
Space colonization Space colonization (also called space settlement, or extraterrestrial colonization) is permanent human habitation that is not on Earth. Many arguments have been made for space colonization. The two most common ones are survival of human civilization and the biosphere from possible disasters (natural or man-made), and the huge resources in space for expansion of human society. However right now the challenges, both technological and economic, involved in building a space colony are as great as the potential payoff. There have been no space colonies built so far, nor are there any governments or large-scale private organizations with a timetable for building any. Reasons[edit] Survival of human civilization[edit] The primary argument that calls for space colonization as a first-order priority is as insurance of the survival of human civilization, by developing alternative locations off Earth where humankind could continue in the event of natural and man-made disasters. J. Goals[edit]
SETI Search Reveals No Alien Signals from Exoplanets Intelligent alien life is likely relatively rare throughout our Milky Way galaxy, with fewer than one in a million solar systems harboring civilizations advanced enough to send out radio signals, a new study reports. A research team that includes famed alien hunter Jill Tarter — the model for astronomer Ellie Arroway in Carl Sagan's famous book "Contact" — surveyed dozens of planet-hosting stars for radio signals from alien civilizations. They turned up nothing. "No signals of extraterrestrial origin were found," the researchers conclude in the study, which has been accepted for publication in The Astrophysical Journal. Searching for signs of intelligent life The team selected 86 stars using data from NASA's planet-hunting Kepler space telescope, and also observed 19 stars that serendipitously fell within range as they searched the primary targets. The researchers were working with the catalog of Kepler planetary candidates, which at the time included 1,235 possible exoplanets.
Purple bacteria on Earth could survive alien light Public release date: 23-Jul-2013 [ Print | E-mail Share ] [ Close Window ] Contact: Annette Gallaghera.gallagher1@umiami.edu 305-284-1121University of Miami CORAL GABLES, FL (JULY 23, 2013) — Purple bacteria contain pigments that allow them to use sunlight as their source of energy, hence their color. Small as they are, these microbes can teach us a lot about life on Earth, because they have been around longer than most other organisms on the planet. Johnson, head of the inter-disciplinary research group in complexity in the College of Arts and Sciences at UM and his collaborators share their findings in a paper titled "Extreme alien light allows survival of terrestrial bacteria" published online in Nature's Scientific Reports. The results are also applicable in the scenario of our own sun developing extreme fluctuations and in a situation in which bacteria are subject to extreme artificial light sources in the laboratory. Light comes in packets of photons. [ Print | E-mail