We thought that the superpower of whales was their size. It’s actually the complex chemistry of your feces.

When we think about the baleen whaleswe usually imagine giant animals that sail the seas and feed on huge schools of fish, without much relevance to us as humans. However, they have been more important than we can think, being crucial when it comes to talking about the survival of our marine ecosystems. And all thanks to their excrement. What we knew. For years science has known that whale feces acted as a natural fertilizer top level. Now, a new study has brought to light the sophisticated chemical mechanism behind this ‘floating gold’. To understand its great importance, we must look at the base of the marine food chain that is in the phytoplankton. These are nothing more than microscopic algae that have the function of being the lungs of the ocean and the basis of marine life. The ‘problem’ is that to thrive they need iron, since without this mineral these algae cannot grow and could spell the end of all marine life. The feces. This is where enter the classic and revealing study led by Stephen Nicol in 2010, where something astonishing was quantified: the fecal iron measured in the whales was about ten million times higher than that of the Antarctic water that surrounded them. This was important because the whales functioned as a “biological bomb,” recycling and releasing about 50 tons of iron a year into surface waters before industrial hunting depleted their populations. But we were seeing that adding iron to the sea was not enough, since it tends to sink or become inaccessible quickly. So we were asking ourselves a logical question: how is this whale fertilizer made so effective? We already know it. The answer has recently come thanks to research published in Nature which shows how a team analyzed five fecal samples from baleen whales. Here they were able to discover that the secret of being such a good marine ‘fertilizer’ is not in the amount of metals they excrete, but in how they package it, since the feces contain high concentrations of what are known in chemistry as organic ligands. Its function. We can find that it is twofold, the first being the enhancement of the bioavailability of iron. This means it acts like molecular ‘tweezers’ that trap dissolved iron, preventing it from precipitating to the sea floor and keeping it in a format that phytoplankton can easily absorb. But in addition to this, it neutralizes the copper that is present in the ocean and that in high concentrations is lethal for this phytoplankton. In this way, the ligands present in whale feces bind to copper, drastically reducing its toxicity and creating a safe environment for algae growth. Its importance. In addition to being a very curious fact, the reality is that this discovery has changed our understanding of the biogeochemistry of the ocean. And, although we think that whales are not only consumers at the top of the food chain, the reality is that they are gardeners of the sea, since they fertilize the surface waters and protect the phytoplankton that is essential for the rest of the animals that live in the ocean. But these blooms not only feed the entire marine ecosystem, they also capture millions of tons of carbon dioxide from the atmosphere, helping to mitigate climate change. In this way, whale feces help their environment, but also us indirectly. Images | Todd Cravens Annie Spratt In Xataka | China is making an “invisible ocean” of the planet: when it’s done, it will steal the last advantage the US had left

Ukraine sensed that there was a superpower behind Russia’s kamikaze drones. The surprise is that there are actually two

Many phases have passed since the Russian invasion in 2022 until today, but if one thing has become crystal clear, it is that the war in Ukraine has become a brutal laboratory where drones are the most decisive and fastest weapon to improve, to the point of concentrating a huge part of the recent losses and setting the pace of the war of attrition. In this scenario, Ukraine has been asking itself the same question for some time: how does Russia get so many drones? An industrial war. In the current scenario, the front is not only in Donetsk or Kharkiv, but also in industrial parks from Guangdong and Shenzhenwhere processors, cameras, motors, sensors and controllers are made that determine how much a drone flies, what it sees and how accurately it hits. The most disturbing thing here is not only the technological dependence, but the fact that this dependence is shared by both sideswhich turns the supply of parts into a kind of undercurrent that sustains the conflict even when sanctions seek to cut it off. The Geran-5. Now, Ukraine claims have identified a new Russian attack drone, the Geran-5which breaks with the classic “delta wing” type profile associated with the Iranian Shahed and adopts a shape more similar to a conventional aircraft, visually linking it Iranian Karrar and, by extension, to older designs inspired by American systems. The key is that it would be a more powerful and faster jet model, with an estimated speed up to 600 km/hand with tactical ambitions that go beyond the simple cheap “kamikaze drone”: it is attributed a range of about 900 km and an approximate war load of 90 kilos. Ukraine affirms that Russia is studying launching it from Su-25 aircraft to expand your radius of action, as well as explore configurations that include R-73 air-to-air missiles to complicate life for Ukrainian aviation. In other words, Russia is not only multiplying quantity, it is also testing a ladder of sophistication that mixes loitering munitions with concepts closer to a combat UAV. Geran-5 He Deja Vú. The central element, and the most politically controversial, is the list of foreign components that Ukraine claims to have found in the wreckage of the new Geran-5, including more than a dozen western and chinese electronic partswith at least nine attributed to American manufacturers and one identified like german. are mentioned critical components for navigation, communications and control, such as signal processors, clock generators and transceivers, that is, the type of electronics that does not “explode” by itself, but that turns a drone into a reliable, stable and reproducible system. For kyiv, this shows that Russia continues to avoid sanctions structurally, relying on gray markets and supply chains where real traceability is dissolved, and which has a huge machinery behind it headed by two superpowers (China and the US), along with the rest of Western “allies”. The underlying message is simple: modern war is not only won by manufacturing metal and explosives, also getting chipssensors and modules that are cheap, easy to transport and difficult to block without paralyzing global trade. Image provided by GUR showing the partial remains of a Geran-5 China as epicenter. The Financial Times said an almost absurd scene: Ukrainian businessmen visiting Chinese factories with schedules calculated to the second so as not to coincide with Russian buyers, entering through side doors and waiting in corridors, as if the conflict was managed with hotel logistics. The reason is that both armies they need the same parts and they go after the same suppliers because China dominates the material base of the commercial drone: not only does it produce a large part of the drones on the market, it also controls key elements such as cameras, sensors, controllers and propulsion, with costs much lower than Western equivalents. The result is that innovation leaks on both sides almost at the same time: if Ukraine sees a new transmitter on Russian drones, it locates the Chinese manufacturer and tries to buy it. If Ukraine asks for a specific upgrade, you may find that a week later that same supplier offers it to Russia as well. The war thus becomes a race of “components” more than doctrines, and China goes from being a “neutral” country to being the place where it is decided how quickly the conflict evolves. The supply chain. Beijing maintains the public line of neutrality and affirms that it does not supply lethal weapons, that it strictly controls dual-use goods and that its position is “objective and fair.” However, as we have said, the reality It’s different: Even if controls are in place, the system is filled with middlemen, shell companies, opaque routes and deliberate ambiguity about the end user. A market where some exhibitors show platforms with simulated weaponswhere military buyers mix with civilian fairs. In parallel, there is an imbalance of power: Russia, with more resources and priority state, can pay more, buy earlier and secure quotas, leaving Ukraine waiting or forcing it to improvise at the front due to lack of parts. Neutrality, in practice, is not just about prohibiting, but about who can best circumvent the restrictions. How to avoid restrictions. The real circumvention ecosystem works with shipments via indirect routestransportation through third countries, trucks crossing Central Asia with limited controls, and a logistics market specialized in “sensitive merchandise” that continues to operate because the economic incentive is enormous. Plus: the role of regional financial clearing platforms, which facilitate payments for sanctioned productsand the ability to create intermediate entities even in European countries to disguise operations. If you like, sanctions, as they work, introduce friction, but not rupture: they make it more expensive, slow down, force people to hide better, but they do not cut off the flow of chips, motors or cameras. And in a war where an FPV drone can be as decisive as an armoredthat logistical continuity is equivalent to operational continuity on the battlefield. Ukrainian dependency. Ukraine has made a lot of progress in … Read more

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