1.Hong Eun Sook 2.Seoul suspected of releasing fish into Cheonggye Stream 3.Seoul city may think this case will be support 4-rever plan. I feel doubt about science as a fact. Evidence require interpretaion, and it can be interpreted differently. I mean enviornment problem is too social. Legislation, institution, culture is made by human, so the fact is easy to be hided. ----------------------------------------- Seoul City has boasted of the diverse species of fish that swim into the artificial Cheonggye Stream from lower natural streams such as the Jungnang Stream thanks to its eco-friendly restoration project. But an environmental organization Monday raised questions about the city's claim, saying that the fish have been actually been placed there by city officials.
For instance, a dark chub found at Cheonggye Stream originally lives in Seomjin River, which passes through Jeolla Province, in the southwest of the nation.
The Korea Federation for Environmental Movements (KFEM) said that Seoul City brought 50 dark chub from a fresh-water fish researcher in 2006 and released them into the Cheonggye Stream on purpose.
"We suspect that the city deliberately moved some fish to show evidence of the improvement of the stream's water quality," a KFEM official said.
KFEM quoted experts who say there is no natural way for dark chub to inhabit the Cheonggye Stream. They also raised suspicions on the existence of other species such as Korean striped and spined bitterlings.
"These bitterlings need shellfish to spawn, but Cheonggye Stream is not a proper environment for clams," the official said. "We suspect the city of releasing them as well."
However, the Seoul Metropolitan Facilities Management Corporation, a city-affiliate, denied the allegations.
"The dark chub we brought in 2006 was exhibited at an aquarium for education," a city official explained. "We admit that there are some alien fish that citizens have released into the stream, which is out of our hands."
The city has said the increase in the number of fish in Cheonggye Stream is a sign of the improvement of its water quality. ---------------------- http://www.koreatimes.co.kr/www/news/nation/2010/05/117_66442.html
1. LEE, Sung-Hee 2. Energy Industry Faces Paradigm Shift 3.Energy's Paradigm is transferring to renewable energy. the previous generation 's main energy was fossil fuels. those were restrictive and generated environmental problems. but the next generation's energy is wind and solar energy. those is renewable and infinite. Energy's restriction and fluctuation caused another capital's inequality. So, government have to work towards developing renewable energy. ----------------------- Business Opportunities Reach Beyond Renewable Energies
By Holger Rubel, Choi In-jin
We are witnessing a paradigm change. Historically, electricity generation has been designed to follow demand. Now, we are moving toward a world in which virtually continuous demand is expected to be met, to a large extent, by energy sources ― wind and sun ― that are not ``on,'' or able to generate, much of the time. This challenge makes electricity storage critical, especially on a large-scale.
Large-Scale Electricity Storage
Large-scale electricity storage refers to harnessing excess power generated in times of abundant availability, or low demand, and releasing it into the grid later when power generation is low, or demand is high. There are five main types of storage and key technologies within those categories.
The first is mechanical storage, including pumped hydroelectric storage, compressed air energy storage (CAES), and flywheel energy storage. The second is thermal storage, including hot-water storage, molten-salt storage, and phase-change material storage.
Thirdly, electrical storage is also a viable option, including super-capacitors and superconducting magnets. The fourth is electrochemical storage, including flow and static batteries. Finally, there is chemical or hydrogen storage.
Among these, the technologies that look most promising today for large-scale deployment are CAES, hydrogen storage, batteries, and pumped hydroelectric storage. All of these are capable of storing significant amounts of energy, which is essential for balancing fluctuating renewable sourcess.
Fluctuation Management
While the business case for investing in storage is currently weak, that situation will change. Today's fluctuations in generation are compensated for relatively easily and cheaply by flexible conventional power plants, but there are limits to how much these plants will be able to provide. Simultaneously, the march toward a fossil-fuel-free energy landscape continues: ambitious targets for the share of electricity to be provided by renewable sources have been formulated and confirmed. Wind and solar photovoltaics are the most competitive and widely available renewable sources and will certainly account for the lion's share of renewable energy produced ― and they require storage to be viable...... ---------- http://www.koreatimes.co.kr/www/news/special/2010/06/242_65053.html
A very down to earth* kind of guy. I'm an environmental sociologist interested in establishing material and organizational sustainability worldwide. I'm always looking for interesting materials/technologies, inspiring ideas, or institutional examples of sustainability to inspire others to recognize their choices now. To be fatalistic about an unsustainable world is a sign of a captive mind, given all our options.
*(If "earth" is defined in a planetary sense, concerning comparative historical knowledge and interest in the past 10,000 years or so anywhere...) See both blogs.
1.Hong Eun Sook
ReplyDelete2.Seoul suspected of releasing fish into Cheonggye Stream
3.Seoul city may think this case will be support 4-rever plan. I feel doubt about science as a fact. Evidence require interpretaion, and it can be interpreted differently. I mean enviornment problem is too social. Legislation, institution, culture is made by human, so the fact is easy to be hided.
-----------------------------------------
Seoul City has boasted of the diverse species of fish that swim into the artificial Cheonggye Stream from lower natural streams such as the Jungnang Stream thanks to its eco-friendly restoration project. But an environmental organization Monday raised questions about the city's claim, saying that the fish have been actually been placed there by city officials.
For instance, a dark chub found at Cheonggye Stream originally lives in Seomjin River, which passes through Jeolla Province, in the southwest of the nation.
The Korea Federation for Environmental Movements (KFEM) said that Seoul City brought 50 dark chub from a fresh-water fish researcher in 2006 and released them into the Cheonggye Stream on purpose.
"We suspect that the city deliberately moved some fish to show evidence of the improvement of the stream's water quality," a KFEM official said.
KFEM quoted experts who say there is no natural way for dark chub to inhabit the Cheonggye Stream. They also raised suspicions on the existence of other species such as Korean striped and spined bitterlings.
"These bitterlings need shellfish to spawn, but Cheonggye Stream is not a proper environment for clams," the official said. "We suspect the city of releasing them as well."
However, the Seoul Metropolitan Facilities Management Corporation, a city-affiliate, denied the allegations.
"The dark chub we brought in 2006 was exhibited at an aquarium for education," a city official explained. "We admit that there are some alien fish that citizens have released into the stream, which is out of our hands."
The city has said the increase in the number of fish in Cheonggye Stream is a sign of the improvement of its water quality.
----------------------
http://www.koreatimes.co.kr/www/news/nation/2010/05/117_66442.html
1. LEE, Sung-Hee
ReplyDelete2. Energy Industry Faces Paradigm Shift
3.Energy's Paradigm is transferring to renewable energy. the previous generation 's main energy was fossil fuels. those were restrictive and generated environmental problems. but the next generation's energy is wind and solar energy. those is renewable and infinite. Energy's restriction and fluctuation caused another capital's inequality. So, government have to work towards developing renewable energy.
-----------------------
Business Opportunities Reach Beyond Renewable Energies
By Holger Rubel, Choi In-jin
We are witnessing a paradigm change. Historically, electricity generation has been designed to follow demand. Now, we are moving toward a world in which virtually continuous demand is expected to be met, to a large extent, by energy sources ― wind and sun ― that are not ``on,'' or able to generate, much of the time. This challenge makes electricity storage critical, especially on a large-scale.
Large-Scale Electricity Storage
Large-scale electricity storage refers to harnessing excess power generated in times of abundant availability, or low
demand, and releasing it into the grid later when power generation is low, or demand is high. There are five main types of storage and key technologies within those categories.
The first is mechanical storage, including pumped hydroelectric storage, compressed air energy storage (CAES), and flywheel energy storage. The second is thermal storage, including hot-water storage, molten-salt storage, and phase-change material storage.
Thirdly, electrical storage is also a viable option, including super-capacitors and superconducting magnets. The fourth is electrochemical storage, including flow and static batteries. Finally, there is chemical or hydrogen storage.
Among these, the technologies that look most promising today for large-scale deployment are CAES, hydrogen storage, batteries, and pumped hydroelectric storage. All of these are capable of storing significant amounts of energy, which is essential for balancing fluctuating renewable sourcess.
Fluctuation Management
While the business case for investing in storage is currently weak, that situation will change. Today's fluctuations in generation are compensated for relatively easily and cheaply by flexible conventional power plants, but there are limits to how much these plants will be able to provide. Simultaneously, the march toward a fossil-fuel-free energy landscape continues: ambitious targets for the share of electricity to be provided by renewable sources have been formulated and confirmed. Wind and solar photovoltaics are the most competitive and widely available renewable sources and will certainly account for the lion's share of renewable energy produced ― and they require storage to be viable......
----------
http://www.koreatimes.co.kr/www/news/special/2010/06/242_65053.html