The Fallow Deer is the most common deer in Ireland, in fact many of them can be seen wandering around the grounds of St. Columba's College. The Common Fallow Deer (the most common type) have a summer coat which is a chestnut colour with white spots on the side. Their winter coat is greyish-brown without spots. Fallow deer have a white rump patch that is completely surrounded by a heart-shaped dark line. The tail, which is black on top and white underneath, is quite long and extends below this rump patch. Adult males (bucks) are generally larger than females (does), standing about 1m at the shoulder and weighing around 100kg. The does are about 80cm tall and only about half the weight of males. The antlers of bucks are quite large - up to about 75cm in length. These are shed in spring after which a new set immediately begins to grow. In comparison to those of the red and sika deer, the antlers of the mature male fallow deer are distinctively flattened (palmate).
Saturday, 27 February 2010
Friday, 26 February 2010
Thursday, 25 February 2010
Wednesday, 24 February 2010
Tuesday, 23 February 2010
The new energy concept, penned Laser Inertial Fusion Engine (LIFE), looks at using the power of lasers to stimulate nuclear fusion. Thanks to the new achievement, a prototype nuclear fusion power plant could be operating within a decade, speculated by Siegfried Glenzer, the leader of the project at Lawrence Livermore National Laboratory in California. Glenzer and colleagues used the world's largest laser array—the Livermore lab's National Ignition Facility—to superheat furl hydrogen, thus forcing two hydrogen atoms together to form a helium atom. This technigue has the potential to created an enormous amount of clean energy. Nuclear fission, by contrast, involves the splitting of atoms, resulting in the formation of nuclear waste products.
Monday, 22 February 2010
- RT @guardianscience: Dolphins offer humans a clue to treating diabetes http://bit.ly/a6VDvv
- RT @guardianscience: Great white shark is more endangered than tiger, claims scientist http://bit.ly/cpZTNW
- RT @wiredscience: New free NASA iPhone app lets you track sunspots and solar tsunamis with real-time 3-D data. http://bit.ly/dbNouk
- RT @ncteireland: NCTE: Innovate: Twitter in Schools and Virtual Learning Environments (VLEs): http://bit.ly/a0Ik2J
- Obama calls the ISS: http://bit.ly/9u9QY
- Tutankhamun's DNA reveals new secrets: http://bit.ly/cPbOIf
- RT @collegebiology: Oxytocin a therapy for #autism? http://bit.ly/9d7a3c #biology #sciencenews #ASD
- New species of Tyrannosaur discovered : http://bit.ly/b1G0x0
- Universe older than we think? http://bit.ly/dzBGzH
- The sun as you've never seen it before: extreme ultraviolet closeup from the Solar Dynamics Observatory http://bit.ly/chvbwY
- RT @sccenglish: iPhones and iPod Touch in Education http://bit.ly/9SqTNX
Thursday, 18 February 2010
Wednesday, 17 February 2010
Tutankhamun, who became pharaoh at age 10 in 1333BC , ruled for just nine years at a pivotal time in Egypt's history. Speculation has long swirled over his death at 19. A hole in his skull fuelled speculation he was murdered, until a 2005 CT scan ruled that out, finding the hole was likely from the mummification process. The scan also uncovered the broken leg.
Friday, 12 February 2010
Thursday, 11 February 2010
Meet Inuk, a 4000 year old man whose hair, which was preserved in Greenland's permafrost, provided enough DNA for a complete genome analysis. The researchers say the man had brown eyes and thick dark hair, although he would have been prone to baldness. They say the genome also shows that his ancestors migrated from Siberia. The man has been named Inuk, which means "human" in the Greenlandic language. The study also revealed his blood group (A+), his risk of developing certain diseases, that he faced a high likelihood of going bald, and perhaps most improbably, the dry consistency of his earwax. Other tests on the hair suggest the man survived on a marine diet of seals and seabirds.
The researchers say an analysis of the genome shows that Inuk was from the Saqqaq culture. The team now has genetic evidence that Inuk's metabolism and body mass meant he was adapted to living in a cold climate. The Saqqaq hunted seals and seabirds and relied on the sea for most of their food. Archaeological remains show they lived in tiny tents in winter. Click here to see an article in today's Irish Times to find out more about Inuk.
Wednesday, 10 February 2010
Monday, 8 February 2010
Exactly why the redwoods grow so tall is a mystery. Theories continue to develop but proof remains elusive. The trees can reach ages of 2,000 years and regularly reach 600 years. Resistance to natural enemies such as insects and fire are built-in features of a coast redwood. Diseases are virtually unknown and insect damage insignificant thanks to the high tannin content of the wood. Thick bark and foliage that rests high above the ground provides protection from all but the hottest fires. The redwoods' unusual ability to regenerate also aids in their survival as a species. They do not rely solely upon sexual reproduction, as many other trees must. New sprouts may come directly from a stump or downed tree's root system as a clone.
Sunday, 7 February 2010
Saturday, 6 February 2010
Friday, 5 February 2010
Thursday, 4 February 2010
Wednesday, 3 February 2010
Tuesday, 2 February 2010
The Frog Blog would like to annouce details of SCC's Annual Biology Prize. This year, pupils (from Forms IV, V or VI) are asked to provide a 300 to 400 word synopsis or summary of any Biology topic of their choice. It may be broad or narrow but must be interesting and unique. Pupils should research the topic thoroughly and include references in their synopses.
The top 5 - 6 proposals will then be asked to prepare a 15 minute PowerPoint Presentation on their topic and be able to answer questions within it. All prize entries must be submitted by e-mail to firstname.lastname@example.org by Monday February 8th 2010. Good luck and get working!!
Monday, 1 February 2010
Mercury is a very strange metal. It is a liquid at room temperature, but it is so dense that cannon balls float in it. With the atomic number 80 in the periodic table and with an atomic weight of 200, this element is more dense than lead. With a melting point of −38.83 °C and boiling point of 356.73 °C, mercury has one of the narrowest ranges of its liquid state of any metal. Mercury is, in fact, the only metal that is liquid at standard conditions for temperature and pressure and one of only six elements that are liquid at room temperature.
Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide), which is the source of the red pigment vermilion, and is mostly obtained by reduction from cinnabar. Cinnabar is highly toxic by ingestion or inhalation of the dust. Mercury poisoning can also result from exposure to soluble forms of mercury (such as mercuric chloride or methyl-mercury), inhalation of mercury vapour, or eating fish contaminated with mercury. Mercury has many uses though and is used in thermometers, barometers, electrical devices and much more. Interestingly, mercury has a negative coefficient of surface tension, which means that the meniscus on the surface is the other way up from normal.