Crispian.net. Abejas esenciales. Las abejas están pasando por una crisis mundial sin precedentes debo al uso de químicos en la agricultura industrial.
Se afirma que sin ellas la humanidad perecería en 4 años debido al importante rol que estas pequeñas juegan en la naturaleza, las grandes fecundadoras: Droege y colegas comenzaron a hacer un inventario de todas las especies de abejas en América del Norte en 2001. Debido a que los insectos son tan importantes para la industria de la agricultura. "Casi todas las frutas y frutos secos, y muchas de las variedades vegetales que comemos, requieren de insectos, normalmente de las abejas, para la polinización ", explica. Quita polvo de oro (polen de girasol) Un azul brillante Esta abeja, conocido como Augochloropsis sumptuosa, es una especialista de la arena. Cabeza de abeja: Tonos de piedras preciosas Droege no manipula los colores de estas imagenes: "Esas abejas son esos colores... y muchos de ellos son naturalmente iridiscentes.
" Birthplace of dogs discovered. The time-tested bond between humans and dogs is well-documented, but researchers have puzzled for a long time over where and when our species became so interlocked.
Previous studies indicated East Asia as the site where wolves were first tamed, but a new study delves even deeper and reveals even more history of man's best friend. From Science Daily, These discoveries are presented in an article in the scientific journal Molecular Biology and Evolution, where it is claimed that the dog appeared 16,000 years ago, in Asia, south of the Yangtze River in China. This is a considerably more specific date and birthplace than had previously been put forward. According to the researchers, taming wolves to work with humans occurred at roughly the same time as people in this part of the world transitioned from hunters and gatherers to farmers. Unfortunately, it appears that the bond between man and wolf/dog was still a bit tenuous.
Source: Science Daily. The 10 weirdest animal discoveries of 2012. As the year comes to an end, it's time to look back at the grossest, oddest and simply most fascinating animals to make the headlines in 2012.
There were zombie worms and penis fish, not to mention turtles with a strange way of getting rid of urine. Read on for 2012's most bizarre. 1. A 'tulip' with a digestive system An ancient fossil found in Canada looks like a field of tulips frozen in stone. Siphusauctum gregarium, a 500-million-year-old filter feeder, was the length of a dinner knife with a bulbous "head" containing a feeding system and a bizarre gut. 2.
Moving on to other ancient marine wildlife, here's a sea creature much scarier than an animal that looks like a flower. Pliosaurus funkei, as it is now properly known, was 40 feet (12 meters) long with a 6.5-foot (2 m)-long skull. "They had teeth that would have made a T. rex whimper," study researcher Patrick Druckenmiller, a paleontologist at the University of Alaska Museum, told LiveScience. 3. 4. Where the World Finds Bioethics. Lightning Facts, Lightning Photos, Lightning Simulation, Lightning Interactive.
Greg Laden's Blog. Scientist Solutions. Science Clarified. SPACE. The Particle Adventure. Human's Playground: Genetic Engineering - Biology. As of July 1, 2013 ThinkQuest has been discontinued.
We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Math in Daily Life. When you buy a car, follow a recipe, or decorate your home, you're using math principles.
People have been using these same principles for thousands of years, across countries and continents. Whether you're sailing a boat off the coast of Japan or building a house in Peru, you're using math to get things done. How can math be so universal? First, human beings didn't invent math concepts; we discovered them. Also, the language of math is numbers, not English or German or Russian.
Join us as we explore how math can help us in our daily lives. Ready to get started? Albert Einstein Online. A Science Odyssey. Access Instructions | Technical Notes and Help | Web Site Credits | D WGBH | PBS Online | Search | Printable Version | Feedback | Shop.
Science and Technology Policy Yearbook 2000. What is AAAS?
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