Thursday, November 19, 2009

AGREE!!!

http://www.aspirationlaw.net/nobel.php

ข่าวเศรษฐกิจ

สมคิด เตือนรัฐบาลหยุดเร่งจีดีพี หันมาสร้างความน่าเชื่อถือของประเทศก่อนตกเวทีโลก

กรุงเทพฯ 19 พ.ย.- นายสมคิด จาตุศรีพิทักษ์ อดีตรองนายกรัฐมนตรีและรัฐมนตรีว่าการกระทรวงการคลัง กล่าวปาฐกถาพิเศษ "คิดใหม่ เศรษฐกิจไทย" ว่า ปี 2553 เศรษฐกิจโลกฟื้นตัวแน่นอน และจะเป็นผลดีต่อการส่งออกของไทยให้มีแนวโน้มดีขึ้น แต่การลงทุนและการท่องเที่ยวยังไม่ฟื้นตัว สิ่งที่รัฐบาลต้องเร่งทำในขณะนี้คือ การสร้างความน่าเชื่อถือให้กับประเทศไทย หรือ (Thai Trust) ซึ่งมั่นใจว่าประเทศไทยทำได้ ขอให้มีความตั้งใจจริง รัฐบาลต้องเร่งกำหนดยุทธศาสตร์แห่งอนาคต เพื่อสร้างความเชื่อมั่นให้กับประชาชน คิดใหม่แล้วต้องทำเลย เพราะที่ผ่านมาประเทศไทยเสียเวลากับเรื่องที่ใม่เป็นเรื่อง และที่ให้ความสำคัญกับตัวเลขของการขยายของเศรษฐกิจ หรือจีดีพี มากเกินไป หากประเทศไทยมีความน่าเชื่อถือก็จะมีการลงทุนเข้ามามากขึ้น อัตราการขยายตัวของเศรษฐกิจก็จะตามมา ค่าเงินก็จะมีเสถียรภาพ "หากไทยยังมุ่งในเรื่องที่ไม่เป็นเรื่อง จะกลายเป็นประเทศที่ไม่มีนัยสำคัญของโลก ขณะนี้ประเทศไทยไม่ได้เป็นแกนหลักของกลุ่มประเทศอาเซียนแล้ว แต่กลับเป็นประเทศอินโดนีเซียที่สามารถใช้โอกาสจากวิกฤติเศรษฐกิจ ปี 2540 ปฏิรูปเศรษฐกิจ และสร้างเสถียรภาพทางการเมือง จนเป็นประเทศที่ได้รับการยอมรับว่าเป็นประเทศที่มีประชาธิปไตยที่เข้มแข็ง และมีโครงสร้างเศรษฐกิจที่น่าลงทุน ดังนั้น รัฐบาลต้องเร่งสร้าง Thai Trust ไม่ใช่ High Growth" นายสมคิด กล่าว

นายสมคิด กล่าวว่า วิกฤติเศรษฐกิจโลกครั้งนี้ ทำให้เกิดการจัดระเบียบโลกใหม่ประเทศในกลุ่มจี 20 มีบทบาทแทนกลุ่ม จี 8 ดังนั้น ประเทศไทยต้องหาโอกาสเข้าไปเชื่อมโยงกับกลุ่มจี 20 เพื่อรักษาผลประโยชน์ทางเศรษฐกิจ ขณะเดียวกันประเทศไทยต้องกระชับความสัมพันธ์กับประเทศที่กำลังมีอิทธิพลต่อ เศรษฐกิจโลก เช่น จีน อินเดีย บราซิล เกาหลีใต้ รวมทั้งสหรัฐอเมริกา และญี่ปุ่น และต้องหันมาสร้างความเข้มแข็งในประเทศ ทดแทนการพึ่งพาการส่งออก เพราะการสร้างเศรษฐกิจให้โตอย่างยั่งยืน ต้องเน้นการเพิ่มประสิทธิภาพและนวัตกรรมใหม่ ไม่ใช่แค่การลดต้นทุนสินค้า ซึ่งการจะทำให้ประเทศไทยมีนวัตกรรมที่สร้างสรรค์ต้องผ่าตัด และปฏิรูปกระทรวงศึกษาธิการ กระทรวงเทคโนโลยีและสารสนเทศ กระทรวงวัฒนธรรม และปฏิรูประบบการเกษตรอย่างจริงจัง รัฐบาลต้องเลิกเป็นโรงรับจำนำให้เกษตรกร หันมาเน้นการพัฒนาโครงสร้างพื้นฐาน แก้ปัญหาความยากจน อย่ามองว่าคนเป็นภาระของประเทศ แต่เป็นยุทธศาสตร์ที่ต้องให้ความสำคัญเป็นลำดับแรก.-สำนักข่าวไทยอัพเด ตเมื่อ 2009-11-19 15:03:20

Excellence Top Incredible Supercomputer!!!






I feel that i am knocked out by full technology...our country is too slow in science????
we got a lot of geniouse about this fields...but work for the countries that rich and have fast supercomputer for big research and innovate only that?????
maybe my friend will success about show potential of thier top country about this...out of reach for my country????

sugar shock about supercomputer that have only 3 countries in asia got those!!!!
http://news.cnet.com/8301-27083_3-10385904-247.html
http://www.fz-juelich.de/jsc/docs/en/

October 28, 2009 6:25 PM PDT

Roadrunner supercomputer maps HIV family tree

by Elizabeth Armstrong Moore
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Researchers are using IBM's Roadrunner to analyze tens of thousands of genetic sequences from individuals with HIV.

(Credit: Los Alamos National Laboratory)

Physicist Tanmoy Bhattacharya and HIV researcher Bette Korber are creating an evolutionary genetic family tree based on samples taken by the international Center for HIV/AIDS Vaccine Immunology consortium, in order to compare the evolutionary history of more than 10,000 sequences from more than 400 people with HIV.

If they can identify common features of the virus as it is transmitted, researchers might be able to create a vaccine that recognizes the virus before the body's immune system reacts to--and mutates--it.

What already sounds like a lot of data, however, could balloon further, hence the importance of Roadrunner. "We are at the cusp of being able to obtain more than 100,000 viral sequences from a single person," Korber said. "For this new kind data to be useful, computational advances will have to keep pace."

Roadrunner, developed by IBM for the Department of Energy (and occupying about 6,000 square feet at the Los Alamos National Laboratory in New Mexico), first broke the petaflop barrier (which means it performed more than one million billion calculations per second) in May 2008. It may soon be known for helping develop a "specially designed" HIV vaccine, Bhattacharya says:

The petascale supercomputer gives us the capacity to look for similarities across whole populations of acute patients. At this scale we can begin to figure out the relationships between chronic and acute infections using statistics to determine the interconnecting branches--and it is these interconnections where a specially-designed vaccine might be most effective.
In addition to helping map the HIV genetic tree, Roadrunner has also recently simulated the Big Bang in an attempt to better understand dark matter, calculating the physics behind 64 billion proto-galaxies, each about the size of a billion of our suns. Once it crunched those numbers (all in a day's work, right?), Roadrunner's results predicted five times more dark matter than astronomers have thus far observed.

http://news.bbc.co.uk/2/hi/technology/8362825.stm

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last change 09.04.2009 | | Print
, Monday, 16 November 2009

China joins supercomputer elite

Jaguar Super Computer
Jaguar has taken the top slot from Roadrunner

China has become one of a handful of nations to own one of the top five supercomputers in the world.

Its Tianhe-1 computer, housed at the National Super Computer Center in Tianjin was ranked fifth on the biannual Top 500 supercomputer list.

The machine packs more than 70,000 chips and can compute 563 trillion calculations per second (teraflops).

It is used for petroleum exploration and engineering tasks such as simulating aircraft designs.

However, the fastest machine is the US-owned Jaguar supercomputer, which now boasts a speed of 1.759 petaflops.

One petaflop is the equivalent of 1,000 trillion calculations per second.

The Cray computer has more than 220,000 chips and is owned by the Oak Ridge National Laboratory in Tennessee. It is used to conduct research in climate science, materials science and nuclear energy amongst other areas.

TOP FIVE SUPERCOMPUTERS
Jaguar, Oak Ridge National Laboratory, US. (1.759 petaflops; 224,162 processors)
Roadrunner, Los Alamos National Laboratory, US (1.042 petaflops; 122,400 processors)
Kraken XT5, University of Tennessee, US(831.7 teraflops; 98,928 processors)
Jugene, Forschungszentrum Juelich, Germany (825.5 teraflops; 294,912 processors)
Tianhe-1, National SuperComputer Center, China (563.1 teraflops; 71,680 processors)
Source: Top 500 Supercomputers

It has taken the top slot from another US machine, nicknamed Roadrunner.

The IBM computer is owned by the Department of Energy's Los Alamos National Laboratory in New Mexico and was the first machine to push through the petaflop barrier.

It is currently able to run at 1.042 petaflops and uses the powerful "cell" chip designed for the PlayStation 3.

It is used to monitor the US nuclear stockpile, as well as conduct research into astronomy, genomics and climate change.

The Top 500 list is dominated by machines in the US, which is home to 277 of ranked systems. It has eight of the top 10 machines.

Europe has 153 systems on the list, including the world's fourth most powerful machine. The IBM BlueGene/P supercomputer at the Forschungszentrum Juelich (FZJ) in Germany is the fastest machine outside the US and is able to run at more than 800 teraflops.

The UK has the largest number of European machines on the list, with 44 systems.

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ไทรไข่มุก สาริกาลิ้นทอง สาลิกาลิ้นทอง [Main : หน้ารวมเกษตร พรรณไม้] ไทร ไข่มุก สาริกาลิ้นทอง สาลิกาลิ้นทอง เป็นตัวเดียวกัน แล้วแต่จะเรียกครับ เป็น ไม้มงคล เกี่ยวกับการเจรจา ค้าขาย การขยายพันธุ์ ขยาย พันธุ์ โดยการ ปักชำ จุ่มยาเร่งรากชนิดเข้มข้น แล้วผสมยากันเชื้อราด้วยก็ดี หรือตัดมาแช่ในน้ำ รากก็จะงอกออกมา ตอน หรือ ทาบกิ่ง จะยุ่งยากไป เป็นไม้กลางแจ้ง แดดแรง ๆ ใบจะงอกงามและมีตุ่มแดง ถ้าแดดจัดตุ่มจะออกเขียวอมขาว ยิ่งตัดกิ่งยิ่งแตกออก http://www.bloggang.com/viewdiary.php?id=all4u&month=02-2007&date=03&group=11&gblog=8 http://gotoknow.org/file/kanda-da/list?page=35 Hedera helix. English Ivy. Origin: Europe. High light plant with some direct Hedera canariensis Algerian Ivy Origin: Canary Islands, North Africa High light plant; 8" pot size; comes very full with trailers to 18" or more; leaf size over double that of English Ivy; large bright-green maple-leaf shaped glossy foliage; low maintenance; can be trained to a trellis; makes a wonderful cascade in a hanging planter; 22.00 Hedera helix English Ivy Origin: Europe High light plant with some direct sun; variegated; 8" pot size; 12 - 15" height with some trailers; plant will revert to green in lower lighting; many cultivars available; tiny, star-like leaves in chains along stems; 20.00 http://www.landscapeproductsdepot.com/trailing_plants.htm http://blogs.chron.com/diggingin/2008/12/ http://blog.scs.sk.ca/greenemailsignatureinitiative/2010/01/english_ivy.html http://blog.scs.sk.ca/greenemailsignatureinitiative/2010/01/english_ivy.html Hedera helix 'Goldheart'. http://lifeamongtheleaves.blogspot.com/2009/11/my-heart-belongs-to-hedera.html http://www.keith-allen.co.uk/garden/photo.htm http://www.gcnursery.co.uk/pics/top5.html http://aggie-horticulture.tamu.edu/extension/newsletters/hortupdate/jan01/hujan01.html English Ivy (Hedera helix) ________________________________________ Since they are vines, English ivy lends itself quite well to training into topiaries of various shapes. They are also useful simply as pots containing several individual plants as shown in the photograph. Occasional pruning keeps the plants compact and attractive. Mid-winter is an excellent time to take and root cuttings of English ivies. The plant in the photograph is a result of five individual cuttings stuck directly into the pot and placed in a shady area of the garden for about a month. Take four to six inch tip cuttings and remove the leaves from the lower third of the cutting. Using a pencil or similar dibble stick form holes in the media before inserting the cuttings and firming the media around each one. The application of rooting hormones will increase success with the cuttings but is not necessary. Water every two or three days as needed to keep the media uniformly moist during the rooting period. English ivies prefer shaded areas and can become scorched in hot, sunny exposures. A real advantage to having some pots of these plants is that they are quite cold hardy and do not need to be taken indoors during winter. They also thrive in brightly lit areas inside the home. http://www.fassadengruen.de/eng/uw/climbing_plants/uw/english_ivy/english_ivy.htm English Ivy Hedera helix // colchica (Persian Ivy) Home (German) Home (English) Climbing Plants - Summary http://www.beautifulbotany.com/Stock%20G-I.htm Hedera helix 'Variegata' – Variegated English Ivy – vine http://www.cryleaf.com/fs/hangers.html http://www.clemson.edu/extension/hgic/plants/landscape/groundcovers/hgic1105.html Ivy Prepared by Marjan Kluepfel HGIC Information Specialist, and Bob Polomski. Extension consumer Horticulturist, Clemson University. (New 05/99. Images added 03/07.) HGIC 1105 Printer Friendly Version (PDF) Ivy plants include English ivy (Hedera helix), Algerian ivy (Hedera canariensis), and Persian ivy (Hedera colchina). Boston ivy (Parthenocissus tricuspidata) is an unrelated climbing plant used in similar ways. For information on poison ivy (Rhus radicans) see HGIC 2307, Poison Ivy. English, Algerian, & Persian Ivy Mature Height/Spread: English ivy is an evergreen creeping vine forming a dense mat of dark green foliage. It spreads horizontally over the ground, 6 to 8 inches high, or climbs on walls, fences and trellises up to 50 feet high. The plant has woody stems and climbs by aerial rootlets that cling easily to brick or masonry, but less so to wood. The vine has rich, shiny, dark green, lobed leaves that hold their color if protected from winter sun and wind. Mature plants bear round clusters of small greenish flowers, followed by ¼-inch blue-black berries. 'Glacier English ivy in winter. Karen Russ, ©2007 HGIC, Clemson Extension Hedera helix 'Arborescens' is plain green; 'Glacier' has leaves variegated gray and green, with pink and white margins. 'Baltica,' 'Bulgaria' and 'Hebron' are very hardy forms with small leaves. Very small-leafed forms are 'Conglomerata,' a slow-growing dwarf; 'Hahn's Self-Branching,' with light green leaves and dense branching; and 'Minima' with leaves ½ to 1 inch across. Many cutleaf and variegated cultivars exist. Algerian ivy (Hedera canariensis) has shiny, green leaves 5 to 8 inches wide, with three to five shallow lobes, more widely spaced along the stems than on English ivy. 'Variegata' or variegated Algerian ivy has leaves edged with yellowish white. Persian ivy (Hedera colchica) has oval to heart-shaped leaves, 3 to 7 inches wide and to 10 inches long (largest leaves of all ivies). Persian ivy is more cold hardy. 'Dentata' is faintly toothed. ' Dentata Variegata' is marbled with deep green, gray green, and creamy white. 'Sulpher Heart' has central gold variegation. Large-leafed Algerian ivy growing along a walk Millie Davenport, ©2007 HGIC, Clemson Extension Landscape Use: All are wonderful evergreens for shady locations. They are most useful on north- and east-facing banks, under trees where grass will not grow or as an underplanting between shrubs. The plant roots hold the soil, discouraging erosion and slippage on slopes. Roots grow deep and fill soil densely. Ivy climbs almost any vertical surface with aerial rootlets (small roots along the stem). Many small- and miniature-leafed forms of English ivy are useful for small-area ground covers, hanging baskets, and training to form intricate patterns on walls and in pots. Some are grown as houseplants, but if planted in protected sites, most are hardy. Cultivation: Plants perform best in rich, moist soil, well-supplied with organic material. They prefer shade, especially where summers are hot, or leaves may scorch. Plants are easy to grow from cuttings, many of which already have aerial roots. Plant in the spring and space the plants 1 foot apart for quick coverage within one year. Otherwise, it is more economical to space plants 18 to 24 inches apart. Most ivy groundcovers need trimming around the edges two or three times a year. When the ground cover builds up higher than you want, cut it back with hedge shears. Do this in spring so that new growth quickly covers bald look. Ivy can be a haven for slugs and snails, and rodents also, especially when it is never cut back. Problems: Fungal diseases, which may occur, are leaf spot, gray mold and root rot. Bacterial spot and canker can also be a serious problem. Nematodes, which are microscopic worms that live in the soil and feed on plant roots, may cause stunting of the plants. Spider mites may be a problem in hot, dry locations. Boston Ivy Mature Height/Spread: Boston ivy is a deciduous broadleaf plant, which will grow to a height of 50 to 60 feet when supported. The reddish-bronze new growth turns glossy, dark green in summer and changes to orange-red in fall. This vine bears clusters of blue-black berries. Cultivars include 'Beverly Brooks' with large leaves and bright red fall color; 'Lowii' with small leaves, creating a finer texture; and 'Purpurea' with reddish-purple summer foliage. Landscape Use: This plant is mainly used as a climbing vine. It is one of the best vines for covering structures or supports quickly. It has the potential to damage masonry walls and buildings due to its adhesive disks that cling to structures. The plant will cover windows and doors when given free rein. Cultivation: This plant prefers moist soils and partial shade to full sun. It tolerates a wide range of soil types and it also tolerates city conditions, but is less tolerant of drought, heat and sun than Virginia Creeper (Parthenocissus quinquefolia). Plant two-year old plants. Prune annually to keep the plant in bounds. Problems: Boston ivy does not suffer from serious pests. Spider mites may be a problem in hot, dry locations. Boston ivy is sometimes confused with poison ivy, because it also has three leaflets. Boston ivy is not poisonous, but the best policy is to avoid plants that look like poison ivy. Page maintained by: Home & Garden Information Center This information is supplied with the understanding that no discrimination is intended and no endorsement by the Clemson University Cooperative Extension Service is implied. All recommendations are for South Carolina conditions and may not apply to other areas. Use pesticides only according to the directions on the label. All recommendations for pesticide use are for South Carolina only and were legal at the time of publication, but the status of registration and use patterns are subject to change by action of state and federal regulatory agencies. Follow all directions, precautions and restrictions that are listed. Cultivation and uses Hedera helix in Szczecin-Zdroje, Poland Mixed green and yellow leaves of the cultivar 'Buttercup' It is widely cultivated as an ornamental plant. Within its native range, the species is greatly valued for attracting wildlife. The flowers are visited by over 70 species of nectar-feeding insects, and the berries eaten by at least 16 species of birds. The foliage provides dense evergreen shelter, and is also browsed by deer.[5][10] Over 30 cultivars have been selected for such traits as yellow, white, variegated (e.g. 'Glacier'), and/or deeply lobed leaves (e.g. 'Sagittifolia'), purple stems, and slow, dwarfed growth.[11] [edit] Ethnomedical uses In the past, the leaves and berries were taken orally as an expectorant to treat cough and bronchitis.[12] In 1597, the British herbalist John Gerard recommended water infused with ivy leaves as a wash for sore or watering eyes.[13] Because of toxins also contained in the plant, it should only be used under the consultation of a qualified practitioner.[14] The leaves can cause severe contact dermatitis in some people.[15][16] [edit] Ecological damage Hedera helix is considered an invasive species in a number of areas to which it has been introduced, such as Australia[17] and parts of the United States.[18] Like other invasive vines, such as kudzu, it can grow to choke out other plants and create "ivy deserts". State and county sponsored efforts are encouraging the destruction of ivy in forests of the Pacific Northwest and the Southern United States.[19][20] Its sale or import is banned in Oregon.[21] It is considered a noxious weed across southern, particularly south-eastern, Australia and local councils provide free information and limited services for removal. In some councils it is illegal to sell the plant. Ivy can easily escape from cultivated gardens and invade nearby parks, forests and other natural areas. Ivy can climb into the canopy of trees in such density that the trees fall over from the weight,[20] a problem which does not normally occur in its native range.[5] In its mature form, dense ivy can destroy habitat for native wildlife and creates large sections of solid ivy where no other plants can develop.[20] [edit] References Well maintained / pruned ivy in late winter. It is essential to cut back the areas towards the roof regularly to prevent building damages. Ivy on a townhouse, the neighbouring houses kept free of ivy. Ivy can grow to 20m height and more, and without pruning can lift roof shingles and block downpipes. Ivy “tree” at the entrance to the Museum Bergen at Ruegen / Mecklenburg-Vorpommern. Such a form can only be achieved with regular trimming or / and by using the mature form “Arborescens”. Ancient ivy on the corner of a house, mature form “Arborescens” Ivy is very suitable for greening fences, meshes etc Ivy on a stainless steel mesh, side wall of a bus shelter Evergreen ivy as a symbol of eternal life is an integral part of churches and cemeteries. Unfortunately, due to this “graveyard” character, many people don't like ivy. In our latitudes ivy is definitely evergreen and frost resistant (to approx. 500 m above sea level) Ivy is a popular climber because it is evergreen and is excellent for covering extensive wall areas. Requirements Sunny (full sun) to semi-shaded Position. Soils rich in nutrients and humus with good water provision. Growth and Leaves A self-clinging climber, or "sticker." Of particular interest for façade greening are the wild ie non-hybridised species and juvenile forms, which are generally good climbers with adventitious stem roots and, in moderate climates (Zone 6a and up), are reliably evergreen. The native form Hedera helix is a particularly reliable climber, while Hedera colchica is only reliable in optimal positions. The Irish Ivy Hedera helix “Hibernica” is particularly vigorous, but also less reliable in developing adventitious roots. Hedera helix “Woerner” is known to be especially frost resistant. Once an ivy can no longer grow further upwards, it will stop climbing with stem roots and convert to the senescent form “Arborescens”, which develops simple oval, acuminate leaves instead of lobed ones, grows as shrub only and is sold as a different species altogether. Flower and Fruit Flowers in September, a fragrant feasting meadow for bees! Fruit during or after winter. Bird food. Growth Support Systems For heights to 10m and more, it is recommended to install cables to assist climbing / attaching and also to prevent the plant from collapsing, because during a storm and especially if wall plaster is brittle, entire leaf mats may separate and collapse. For suitable rope systems refer below. Light and Medium, if necessary also Heavy Duty Support Systems. In addition, weaving the plant into fences, wire nets, trellises etc is very decorative. Pruning Possible at any time and often necessary to restrict growth as illustrated and described in photos. General Comments Ivy grows in a strongly light-shunning manner and can cause considerable building damages, especially when brickwork and render have cracks into which the ivy can grow and blast them apart with increasing stem girths. We are often asked how to treat the remainders of the adventitious roots after ripping down the plant from a façade during its renovation. The only way is to burn off / torching the plant traces and repaint the wall. Alternatively, to prevent such damages one can use horizontal climbing barriers such as projecting window sills (Photo) or if necessary, install metal sheets at a certain height to prevent the ivy from climbing any further, at least temporarily until the next pruning ... Poisonous fruit! Cultivation and uses Hedera helix in Szczecin-Zdroje, Poland Mixed green and yellow leaves of the cultivar 'Buttercup' It is widely cultivated as an ornamental plant. Within its native range, the species is greatly valued for attracting wildlife. The flowers are visited by over 70 species of nectar-feeding insects, and the berries eaten by at least 16 species of birds. The foliage provides dense evergreen shelter, and is also browsed by deer.[5][10] Over 30 cultivars have been selected for such traits as yellow, white, variegated (e.g. 'Glacier'), and/or deeply lobed leaves (e.g. 'Sagittifolia'), purple stems, and slow, dwarfed growth.[11] [edit] Ethnomedical uses In the past, the leaves and berries were taken orally as an expectorant to treat cough and bronchitis.[12] In 1597, the British herbalist John Gerard recommended water infused with ivy leaves as a wash for sore or watering eyes.[13] Because of toxins also contained in the plant, it should only be used under the consultation of a qualified practitioner.[14] The leaves can cause severe contact dermatitis in some people.[15][16] [edit] Ecological damage Hedera helix is considered an invasive species in a number of areas to which it has been introduced, such as Australia[17] and parts of the United States.[18] Like other invasive vines, such as kudzu, it can grow to choke out other plants and create "ivy deserts". State and county sponsored efforts are encouraging the destruction of ivy in forests of the Pacific Northwest and the Southern United States.[19][20] Its sale or import is banned in Oregon.[21] It is considered a noxious weed across southern, particularly south-eastern, Australia and local councils provide free information and limited services for removal. In some councils it is illegal to sell the plant. Ivy can easily escape from cultivated gardens and invade nearby parks, forests and other natural areas. Ivy can climb into the canopy of trees in such density that the trees fall over from the weight,[20] a problem which does not normally occur in its native range.[5] In its mature form, dense ivy can destroy habitat for native wildlife and creates large sections of solid ivy where no other plants can develop.[20] [edit] References http://en.wikipedia.org/wiki/Hedera_helix