Pis and whale droppings

In the huge list of unsolved puzzles that science has for a long time the stools of the whales. We knew that these animals ascended from the marine depths where they usually feed and made their needs near the surface. Drawing a parallelism with the fertilization processes in the signing land, this led to the cetologists to imagine each of these promotions of the whales as a festival for shallowwater species. And the truth is that it is. What nobody even dared to imagine was THE PIS. “Pis”? Indeed. Ballena Pis is a very serious matter: only one of these bugs can produce almost 1000 liters of urine a day. Despite this, no one had stopped to think that this dark yellow liquid that stains the water green where it passes could be more than pee. Until now. “The great surprise of the study is that urine far exceeds the other sources of nitrogen”, Joe Roman explainedConservation Biologist at the University of Vermont. And, even if it seems, he has his crumb. Do you miss any nutrient? Ask for a bearded whale! From what Roman’s team has discovered, Barbadas whales transport huge amounts of nitrogen and phosphorus from the polar areas where they feed on the tropical areas where they raise. In good part of the process they depend on the reserves that accumulated in the polar regions. And without those critical nutrients that expel, “many marine plants and animals would not survive.” A “pump” of nutrients. The team He examined The amount of nutrients that moved the Barbadas whales through the ocean, but not only with their pee. They also examined the impact of their placentas and their corpses. According to your estimates, Every year, every barbada Move 3,784 tons of nitrogen and 46,512 tons of organic matter in areas with few nutrients. And that is a lot. Lot. According to Roman“in a place like Hawaii, whales provide more nitrogen than the wind and currents transport.” In fact, Heidi Pearson explained From the University of Alaska Southeast, in National Geographic, “these nutrients stimulate the growth of phytoplankton on the surface of the ocean and also enrich deep water ecosystems.” A world we leave. Little by little we began to intuit the enormous impact it produced Hunting (and almost extinction) of whales: For centuries we have dedicated ourselves to removing vital ecological mechanisms without being aware of what we were doing. Now that we know, a good part of the economy and the societies of the world are so accustomed to it that it is very difficult to back down. But the idea that the ocean would be very different without the pee and the whale droppings remind us that there is still a lot to do. Image | Mike Doherty In Xataka | Whale hunting over the years has had an unexpected effect: it has affected its genetic diversity

An island in Japan has revolutionized its vehicles. They have turned cow droppings into hydrogen fuel

If we talk about hydrogen and mobility, we would possibly have to Add to Japan In the equation. Few companies have tried to make it a real alternative to the electric car like the Japanese Toyota, although it is true that in recent times the idea was Much more than in doubt. An island has shown that technology is still there. Of course, with the invaluable help of tons of cows excrement. The solution in Hokkaido. On the island of HokkaidoJapan, a key region for country production of the countryan innovative project seeks to convert the Hydrogen cow manurethat clean fuel with the potential of feed vehicles, homes and agricultural machinery. With More than one million cows Currently generating 20 million tons of manure per year, this source of waste represents an environmental problem due to its methane emissions and its impact on the Water quality. He Shikaoi Hydrogen Farmlaunched in 2015 by the Ministry of Environment of Japan, addresses this challenge by transforming waste into a sustainable energy resource. As? The manure and urine of cows are Farm collected local and sent to an anaerobic digester, where bacteria break down organic matter to produce biogas and liquid fertilizer. Then, biogas is purified in methane, which later becomes, hydrogen. Sustainable mobility. The plant has a production capacity of 70 cubic meters of hydrogenenough to supply up to 28 vehicles with hydrogen cells per day. In addition to cars, the fuel is currently used In tractors and forklift of the island, whose electrification with batteries is more complex. It is also stored in Canisters that are transported to provide energy to a sturgence fish and Obihiro Zoo. Challenges Several, of course. The main one is logistics, since it must be stored in high pressure tanks, which does so susceptible to leaks and degradation of materials, in addition to requiring specialized infrastructure for transport and distribution. Your acryogenic lmacement at -253 ° C is energetically expensive, which hinders its scalability. In spite of this, the project continues to advance, mainly with subsidies that equate the price of hydrogen with that of gasoline, to promote its adoption in cities such as Sapporo and Muroran. In fact and as we said at the beginning, Japan leads the hydrogen industryalthough the electric cars still They are more profitable than those driven by this gas. Hydrogen from waste. The truth is that the concept of producing hydrogen from waste is not limited to Japan. Other initiatives in the world explore alternative sources such as Pork manurepoultry and even Coconut peels. For example, in Thailand Toyota investigates hydrogen production From chicken excrement. In the United States the University of Illinois developed A METHOD TO MANUFACTURE HYDROGEN With manure, sugarcane residues and corn cobs, significantly reducing the energy consumption of the process. And in Fukuoka, Japan, a wastewater treatment plant produces hydrogen From human wastesupplying a fleet of garbage trucks without emission. All initiatives show that bioenergy from waste can play a key role in the global energy transition. However, the lack of infrastructure and high costs remain barriers for large -scale expansion. Uncertain future. He Project in Shikaoi It is an innovative example of circular economy, where waste becomes energy, reducing emissions and promoting sustainability. However, the viability of hydrogen as an alternative to fossil fuels will depend on technological advances that reduce their cost of production, storage and distribution. Although manure and cow droppings will hardly be the main source of hydrogen in the future, especially worldwide, initiatives such as these can lay the foundations for a new energy industry based on waste recycling, with potential applications in transport, agriculture and clean energy generation globally. Image | Japanexpeter, Nara In Xataka | Remote solar self -consumption: When you can’t install panels on your roof, you ask for remote In Xataka | Solar tiles: What are they, what is their price and what they offer in front of conventional solar panels

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