The smooth handfish is declared extinct

September 3, 2020 by  
Filed under Eco, Green

Comments Off on The smooth handfish is declared extinct

The International Union for The Conservation of Nature (IUCN) has officially declared the smooth handfish extinct. This news makes the smooth handfish the first fish species to be declared extinct in modern history. The smooth handfish belongs to a family of fish that get their name from their fins, which are shaped like hands. As opposed to swimming, the smooth handfish crawled with its hand-shaped fins across the seafloor. The handfish is among the most unique types of fish. Besides their bright, multicolored bodies, their awkward movement on their hand-like fins makes them stand out from other fish. According to the IUCN, there used to be 14 species of handfish. But after the organization updated its list of endangered species, the smooth handfish has been listed as an extinct species. The smooth handfish has not been seen since the year 1802, despite searches being conducted around the world. Related: We are in the sixth mass extinction, and it is accelerating The IUCN’s announcement marks the first time a fish species has been declared extinct in modern history, according to National Geographic . The unfortunate news now shifts focus on the other species in the handfish family. Alarmingly, seven types of handfish have not been seen since 2000 or earlier. This might mean that these species are also on the verge of extinction . The handfish is a special family of fish that is characterized by isolation. They do not associate with other types of fish and are usually localized in one place. “They spend most of their time sitting on the seabed, with an occasional flap for a few meters if they’re disturbed,” Graham Edgar, marine ecologist, told Scientific American . “As they lack a larval stage, they are unable to disperse to new locations — and consequently, handfish populations are very localized and vulnerable to threats.” While the fish stay on the seafloor, they are faced with many threats. Some of the threats include industrial runoff that affects the quality of seawater. Further, fishing and dredging along the seabed also threaten many fish, including the handfish. Invasive species also pose a threat to these unique creatures. The recent news of the smooth handfish’s extinction opens our eyes to the possibility of losing more precious species if actions are not taken to protect biodiversity . + IUCN Via Mic , National Geographic and Scientific American Image via Kenneth Lu

The rest is here:
The smooth handfish is declared extinct

Everything I need to know about generating power from tides

September 10, 2011 by  
Filed under Eco, Green

Comments Off on Everything I need to know about generating power from tides

Marcus Clay: Tidal Energy generating green power from tides While technology has done a lot to improve lifestyles, the numerous inventions and man-made machines require energy to run on and depend on some form of fuel. The high demand for fuel has caused the most-widely used fossil fuels to become dearer and the challenge for today’s scientists is how to generate energy. Again, technology comes to the rescue with tidal power. Scientists and environmentalists have developed ways to harness the tremendous power of violent ocean tides. Trends Jung Seung Woo, Seung Woo Jung, Kim Min Jung, and Kim Hyun Jun from Korea have developed a prototype of a wave and solar energy generator that works day and night. While during the day, the devices that float on the ocean surface trap solar and tidal energy, during the night, it works as a tidal power generator. The device uses some of the power generated to glow at night acting as beacons to guide ships safely away from them. The electricity which is generated is sent ashore via underwater cables. France has also been actively exploring ways of tapping tidal power with its ambitious €40m (£35m) Paimpol-Bréhat project. The project will see the world’s largest tidal array that consists of four 16-metre turbines, being installed out at sea. Initially, one of the turbines will be tested in 35 meters of water off the Bréhat Island. The other three turbines will be installed in 2012. 2 MWs of power generated by this array will be sufficient to power 4,000 French households. The Benefits While the world explores several sources of clean energy, tidal power has several advantages over other forms of green and alternative energy. a. Unlike solar and wind power that largely depend on weather conditions, tidal movements are very predictable and reliable. b. The density of water being much higher than air it means that a turbine used to harness tidal power can be significantly smaller than a wind turbine that generates the amount of electrical output. c. Tidal turbines work noiselessly. Although industrial wind turbines are relatively silent, utility-sized wind turbines are known to generate low-frequency noise that people living in the vicinity complain about. d. Since these turbines do not use oils or grease for lubrication, they pose no threat to the environment. The Lowdown a. Environmental hazard Setting up large structures on the seabed causes considerable damage to the ecosystem. Also, placing these objects in the water reduces the amount of water that moves between a basin where the power is generated and the sea, leading to higher chances of pollution. This reduced exchange of water would also reduce the salinity of water in the basin, significantly affecting life on the seabed. b. Fish and marine life As marine life forms and fish pass through these barrages, even the most innovatively designed barrages are responsible for about 15 per cent of the mortality per pass through. Hence, in the long run, marine life can be severely impacted. c. Irregular power supply Power can be generated only when there is tidal movement in or out of the basin. Although tides are predictable, they are not constant. Hence, power can be generated only during particular times of the day. d. High start-up cost The cost of setting up a tidal array is astronomically high. This may discourage investors from putting their money in tidal power generation. e. Damage Erratic weather conditions and frequent hurricanes raise the fear of damage to the expensive equipment installed on the floor of the ocean. Although this was a major concern during the recent Hurricane Irene, Ocean Power Technologies’ PowerBuoy deployed off the coast of New Jersey withstood the severe conditions experienced during the hurricane. Surprisingly, after facing the onslaught for two days, the PowerBuoy emerged undamaged and fully operational. It even maintained a regular supply of electricity during the hurricane. Although this is a testament to the high levels of engineering skills, it highlights the need for the best engineering and materials that should be used in making turbines. This further raises the cost of manufacturing tidal turbines. The Impact Every country is looking for ways and means of responding to the high demand for energy. And, with the focus on the need for green and renewable energy, governments are leaving no stone unturned, even if it lies on the bottom of the ocean. Tidal power looks more prospective, with wind and solar energy being very seasonal and time bound. The popular saying, ‘time and tide waits for none’ makes tidal energy the much-preferred source of energy in the future.

Continued here:
Everything I need to know about generating power from tides

10 low emission hybrid cars for the common masses

September 10, 2011 by  
Filed under Eco, Recycle

Comments Off on 10 low emission hybrid cars for the common masses

Nisha Changrani: Low-emission hybrid car Low-emission hybrid car It is rightly said that necessity is the mother of invention. The problem of global warming has forced man to invent things which are tough to imagine. Hybrid cars, said to be one of the most useful inventions by man, have gained increased importance nowadays. Besides reducing gas emissions, these cars cause less noise pollution and are less harsh towards our mother nature. Discussed below are some hybrid cars that can be used by the common man. 1. Lexus to unveil stylish LF-Ch hybrid at the Frankfurt Auto Show LF-Ch hybrid car LF-Ch hybrid low emission car Similar to the HS250h Sedan, this hybrid vehicle comes up with some brilliant features like remote touch controller and feedback system. The one sitting in the front can also control audio, climate and navigation systems with ease. 2. Audi’s hybrid Q5 Audi’s hybrid Q5 Audi’s hybrid Q5 car This vehicle from the German car manufacturer will use a lithium-ion battery or nickel metal hydride to run its electric motors. The good part is, the 3 liter gasoline engine would find a good friend to rely on – an electric methodology which could generate 300Nm of power on the highest front. 3. Velozzi’s hybrid SOLO Velozzi’s hybrid SOLO Velozzi’s hybrid low emission SOLO car Expected to be launched in 2012, SOLO will be made up of lightweight materials like nanotubes and carbon fibres. The car is supposed to bash off the others when it comes to performance, the highest run ranging in 130 mph. The best thing about this hybrid vehicle is that it is powered by micro turbine technology which will help you run the car on diverse types of fuel like ethanol, methanol, butanol, gasoline, diesel, bio-diesel and natural gas. 4. Mercedes-Benz confirms E300 BlueTec diesel hybrid E300 BlueTec diesel hybrid E300 BlueTec diesel hybrid car Armed with a 2.2 liter diesel engine, this piece is all set to play havoc in the hybrid car arena, of course for its competitors! The four cylindered engine would allow a decent run of more than 56mpg. 5. Subaru hybrid car Subaru hybrid car Subaru hybrid low emission car Scheduled to be launched in 2013, Subaru has finally announced officially about its hybrid car. However, the detailed features of the car are yet to be announced. However, if sources are to believed the car will have features similar to the Hybrid Tokyo Concept, Legacy and Imprezza. It is speculated that the Subaru car will have a two liter turbo boxer engine and a CVT. It will also feature a couple of electric motors. Subaru may also incorporate lithium ion capacitor technology in this hybrid auto. 6. Mini Car concept reduces emissions with a hybrid drivetrain Mini Car hybrid car Mini Car hybrid low emission car Designed by Alberto Mazza for Mercedes Benz, the Mini Car is a four seater gas-electric hybrid. The car is predicted to attain a speed of about 180kph at the most, and would witness a speed of 100kph in merely 10.4 seconds. Its motors is said to be made up of nickel metal hydride batteries. 7. Axon Automotive hybrid car Axon Automotive hybrid car Axon Automotive low emission hybrid car Launched two years back at the Milton Keynes Science Festival, this hybrid car from UK-based manufacturer Axon Automotive, is a perfect example of an eco-friendly car. The car’s engine turns on its electric mode for short distances whereas for long distances, the car will run on bio ethanol or gasoline. This car is lightweight because of the carbon fibers. The car emits just 50g of CO2 per km. Another stunning feature is that its seats and doors are made from fabrics and recycled carbon fiber respectively. 8. Audi A9 Hybrid concept Audi A9 Hybrid concept Audi A9 Hybrid concept car None could have imagined that a car could repair itself if damaged. Well, this car is a perfect example of this concept. The car has a windscreen and its roof are formed in such a manner out of nanotech material that it repairs itself automatically if damaged. Further, one can change the color of this car with one touch button as it is made up of a special “electronic paint”. The proposed advanced version would contain an internal combustion engine, resulting in a better, low emission and ecofriendly hybrid. 9. 2010 Hyundai IX-Metro low-emission vehicle Hyundai IX-Metro Hyundai IX-Metro hybrid car Launched at the 2010 IX-Metro concept car at Design Korea, this car is powered by a hybrid engine and produces 80gm of CO2 every km. With a capacity to generate 93KW at 6000rpm, this car has an engine made up of three cylinders. An electric counterpart supplements it in the form of a starter motor alternator. 10. E.V.C low-emission hybrid vehicle for all terrains E.V.C low-emission hybrid vehicle E.V.C low-emission hybrid car Brainchild of Prodan Dragos, this car has hexagonal shaped windows which act as photovoltaic cells to generate electricity. Coming to the interiors, it has four large seats and its front seats can revolve backwards. Its rear end can be flattened out to provide a sleeping area.

Original post:
10 low emission hybrid cars for the common masses

Bad Behavior has blocked 5042 access attempts in the last 7 days.