VideosTop 10 AMAZING New Green Technologies in the Works by AdminAugust 30, 2018September 28, 20180427 Share0 Transcript 0:00 10 Amazing New Green Technologies in the Works 0:07 10. 0:12 Air Purifying Roof Tiles 0:14 A big problem with green technology is making it as practical as it is useful. 0:18 With this in mind, a new trend in practical green technology is the coating of roof tiles 0:22 with titanium dioxide, which is useful in cleaning the air. 0:26 Titanium dioxide works as a photocatalyst by oxidizing nitrogen oxides and volatile 0:31 organic compounds into soluble nitrates and fatty acids when exposed to UV light. 0:36 Studies have shown that a thick coating of material on roof tiles reduces 97% of target 0:41 greenhouse gases, while a thinner, cost effective coat still reduces the target gases by 88%. 0:46 This means that it could cost just five dollars to coat an entire roof with the purifying 0:50 compound. 0:51 One home could remove 21g of nitrogen oxide a day, which is the equivalent of what a car 0:55 releases driving 18,000 km. 0:58 Widespread application would allow every home in the world to become a mini-air purifier. 1:02 The idea is still in the testing phase, but early results have been extremely promising. 1:06 The lighter color of the tiles also has the added benefit of producing a small cooling 1:10 effect. 1:11 There’s also a possibility of producing tiles to remove carbon dioxide, but this would 1:15 decrease the practicality of the tiles by making the roofs harder to install. 1:20 9. 1:21 Eco-Concrete 1:22 Eco-concrete is a green technology that combines strength, practicality and air-purification. 1:26 It’s designed to eat smog and pollution by converting nitrogen oxide into harmless 1:31 nitrogenous compounds. 1:32 It has been shown to reduce these gasses by up to 45% in the right weather. 1:36 The concrete has already been installed and tested in Holland with promising results. 1:40 The biggest problem with Eco-concrete comes from its cost — compared to normal concrete, 1:44 it costs quite a bit more because of its use of titanium dioxide. 1:49 Researchers are currently working to find a solution to the problem and increase the 1:52 concrete’s financial feasibility. 1:54 8. 1:55 Fixing the Plastic Problem 1:57 At age 19 most people are worrying about work or college, but Boyan Slat had his eyes on 2:02 something bigger when he came up with a method to drastically reduce the amount of plastic 2:06 in our oceans. 2:07 Though plastic has been a blessing to us in terms of convenience, it has also become a 2:11 curse in the way it affects the environment and kills millions of marine animals every 2:15 year. 2:16 Slat recognized the severity of the problem and established an organization known as The 2:20 Ocean Cleanup in response. 2:22 He went on to develop a method that has been proven to be logistically, technically and 2:26 financially feasible. 2:27 It works using natural currents in the ocean and wind to help move the garbage towards 2:32 collecting platforms, where it would be mechanically removed and recycled. 2:36 The price tag of this massive cleanup project is $43 million a year, but that’s 33% cheaper 2:41 than other methods that promise to remove the same amount of plastic. 2:45 The Ocean Cleanup is currently in the stages of raising money to implement their plan. 2:49 It has been tested with computer models that show it should be able to clean up half of 2:53 the garbage in the Great Pacific Garbage Patch. 2:55 Furthermore, its proof of concept test was successfully done in the Azores. 2:59 While this massive undertaking is a great step in the right direction, Slat believes 3:03 more needs to be done to fix the problem completely. 3:06 7. 3:07 Cool Pavement 3:08 Dark pavement used for most roads absorbs the sun’s energy and heats up the surrounding 3:13 area. 3:14 In the summer, pavement can reach up to 120-150°F, but Cool Pavement has been shown to reduce 3:21 this by over 40°F. With pavement occupying 35-50% of the space in a city, this could 3:27 have a huge effect on the overall temperature of the city itself. 3:31 Researchers at Berkeley are currently trying to figure out what the best color would be 3:34 for cool pavement to maximize its cooling effects. 3:37 The two best options are to create reflective coating for existing pavements or create a 3:42 new type of pavement made from lighter, more reflective material. 3:45 Other benefits include a decrease in pollution and smog, slowing global warming, saving energy 3:50 by decreasing the need for air conditioning, and even decreasing the need for street lamps 3:54 at night because of the reflective surface. 3:56 While there is no way to know exactly how much coating an entire city would benefit 4:00 the environment, Cool Pavement has been helping cities like Chicago that have paved their 4:04 alleys with it. 4:06 6. 4:07 Smog-Eating Buildings 4:08 Mexico City’s Manuel Gea Gonzalez Hospital constructed a 2,500 square meter facade that 4:15 breaks down air pollutants when exposed to UV light. 4:18 The honeycomb increases the surface area by 200% and allows the structure to neutralize 4:23 the same amount of pollutants in one day that’s produced by 8,750 cars. 4:29 In addition, the city of Milan is using a smog-filtering concrete facade to purify the 4:33 air. 4:34 The architecture firm Nemesi and Partners have revealed their plans to produce an air-purifying 4:38 structure in front of the Palazzo Italia. 4:41 The 9,000 square meter structure will take about 2,000 tons of air-purifying concrete 4:47 to complete. 4:48 The concrete is made of 80% recycled materials and works by breaking down harmful pollutants 4:53 into unreactive salt molecules when exposed to UV light. 4:56 Nemesi and Partners are looking forward to presenting their designs at the 2015 Milan 4:57 Expo, and plans are already in the works to make these designs a reality. 4:58 5. 4:59 Real Flower Power 5:00 Much of today’s green technology is made to mimic what plants already do naturally 5:03 to produce energy. 5:05 Plants are able to create energy by breaking down carbon dioxide and water into sugar and 5:09 starch with oxygen as a byproduct. 5:12 Scientists have been able harness this energy by actually interrupting the photosynthetic 5:16 process. 5:17 This is done when the enzymes of the plant split the water molecules. 5:20 At this point, oxygen, hydrogen, and electrons are produced and nanotubes are used to siphon 5:25 the free electrons before they enter the electron transport chain to run the rest of the process. 5:31 The process takes place in the thylakoids, which are located within the chloroplasts 5:35 of the plant cell. 5:36 The thylakoids were modified to allow the nanotubes to detour the electrons down a wire 5:41 and generate an electrical current. 5:43 Usually, plants aren’t very efficient at producing energy from the sun and man-made 5:48 cells generate up to 10 times the efficiency of a normal plant. 5:51 But this new technology has proven especially surprising because the plant was able to generate 5:56 twice the current of a similarly sized solar cell. 5:59 While this technology is still in its infancy, researchers are hopeful that it will soon 6:03 have practical uses and could be used to power household items or even entire power grids. 6:08 Plus, increasing the use of plants could help purify the air in addition to providing power. 6:14 4. 6:15 Energy Harvesting Concrete 6:16 Laurence Kemball-Cook put a new spin on energy harvesting when he founded Pavegen in 2009. 6:22 Pavegen is a new type of energy-harvesting tile that converts the energy of a simple 6:26 footstep into electricity that can be stored or used directly by devices. 6:31 While the kinetic energy harvested from footsteps isn’t enough to supply energy to entire 6:35 power grids, it could be very helpful in powering things like street lamps or vending machines. 6:41 Pavegen is a working product in the process of becoming commercialized. 6:45 In an attempt to showcase its usefulness, Pavegen was actually installed at the finish 6:48 line of the Paris Marathon and was able to generate 4.7 kilowatt-hours of energy. 6:53 Another benefit of installing Pavegen is that it allows the footsteps and movement of crowds 6:58 to be tracked to optimize space and floor management. 7:00 While the tiles themselves are extremely practical, their installation could pose problems. 7:01 The tiles have to be made and installed in ground that’s durable, weather resistant, 7:02 and highly fatigue resistant. 7:03 Furthermore, the tiles could be vandalized or stolen. 7:04 There are still many kinks that need to be worked out to make Pavegen a fully commercialized 7:05 product, but it’s definitely a step in the right direction. 7:06 3. 7:07 Hyperloop 7:08 Elon Musk, the man behind electric car company Tesla, has a new idea up his sleeve. 7:09 Known as the Hyperloop, this system would be able to transport passengers from Los Angeles 7:10 to San Francisco in just 35 minutes, traveling at speeds of about 700 mph. 7:16 The Hyperloop would use an electric compressor fan at the front of each individual passenger 7:20 pod to surround it with a cushion of air and decrease friction, much like an air hockey 7:24 table. 7:25 The capsules would then be accelerated in a low-pressure tube with magnetization. 7:29 Furthermore, the Hyperloop would be completely self-sustaining by placing solar panels on 7:33 the top of the tube and storing energy via compressed air. 7:37 It wouldn’t disrupt the farmland along the route any more than a telephone pole. 7:40 Musk estimates the project would cost about six billion dollars, which seems like a massive 7:44 price tag until you realize that California voters already approved nine billion to be 7:49 allotted for a speed train between San Diego and San Francisco. 7:52 Musk feels that his Hyperloop will be more cost-effective and sustainable than any other 7:56 proposed high-speed trains. 7:58 It would greatly decrease pollution from cars and commercial airliners, as well as increase 8:03 the efficiency and speed of travel.1 8:04 2. 8:05 Phoenix Towers 8:07 Currently, the world’s largest tower is the 830 meter tall Burj Khalifa. 8:12 It may be in danger of losing its title to two proposed towers for the city of Wuhan, 8:17 China. 8:18 These towers would stand at 1000 meters and would serve to clean local air and water pollution. 8:22 The towers would suck the water in from the surrounding lake, send it through a series 8:26 of filters and then back out into the lake. 8:29 In addition, the towers will be lined with a pollution absorbing coating and vertical 8:33 gardens to pull even more pollution from the air. 8:36 The chimney in the middle of the towers will serve to naturally pull air across the lake 8:39 and oxygenate it. 8:41 The towers will be completely self-sustaining thanks to wind turbines, solar panels, and 8:45 hydrogen fuel cells that would run on the building’s waste. 8:48 These elements will not only produce all the energy the towers need, but also generate 8:52 a little extra energy for the surrounding area. 8:54 The towers are currently awaiting the mayor’s approval, but it’s predicted that construction 8:56 of this massive undertaking will be finished by 2017 or 2018. 8:57 1. 8:58 Tianjin 8:59 Most green technologies are simply products to help existing cities become environmentally 9:02 friendly. 9:03 China is going a step further by simply constructing an entire eco-friendly city from scratch. 9:08 Known as Tianjin, this sustainable community for 350,000 residents is expected to be complete 9:13 by 2020 and will span over 30 square kilometers. 9:17 The entire complex will be powered by solar and wind technologies as well as feature rainwater 9:22 recycling, wastewater treatment, and desalination of seawater. 9:26 Carbon emissions will be basically non-existent with 90% of traffic being public transportation. 9:30 The city will be divided into seven districts, each with its own sustainability theme. 9:33 The Lifescape district will be in the heart of Tianjin and feature soil-topped mounds 9:35 to contrast the surrounding high-rise buildings. 9:36 Eco-Valley will serve as a corridor for the new light rail system to operate and connect 9:37 the districts. 9:38 Solarscape will act as the administrative and civic center. 9:39 Urbanscape will function as core of the city and utilize vertical layering to reduce emissions 9:42 and make efficient use of vertical space. 9:43 Its buildings will be organized as a honeycomb and interconnect using sky bridges. 9:44 Windscape will serve as a place for recreation and relaxation. 9:45 Earthscape will function as the residential suburbs and be filled with lush greenery. 9:47 Lastly, Eco-corridors will bisect the city and provide a path for animals to move about 9:49 the city without human interference. 9:50 If successful, Tianjin could serve as a stepping stone for more green cities.