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How to Keep Bananas Fresh for a Month

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Ripe bananas usually soften and darken quickly, but one simple trick can help them stay firm for weeks: rinsing them in salt water before storage, according to a report. Start by mixing one tablespoon of salt with clean water. Then submerge the entire bunch of bananas in the solution, wash the peel gently and clean the stem thoroughly. Finally, remove the bananas and dry completely with a towel. Drying is necessary because excess moisture can cause mold to appear on the bananas. After drying, store the bananas in a cool and ventilated place. Bananas are a natural source of potassium. Photo by VnExpress/Bui Thuy The salt water rinsing method works through three mechanisms: First, it helps eliminate bacteria and mold. Banana peels carry various microorganisms and fungal spores. Salt has mild antiseptic properties that help remove agents that trigger rotting. Second, salt slows the enzymes that speed up ripening and the release of ethylene, the gas that makes fruit mature faster....

Is Your Showerhead Hiding Bacteria?

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The Hidden Threat in Your Showerhead A small amount of periodic care ensures the water cascading over you is truly as clean and invigorating as it feels, turning your shower from a potential source of contamination back into the pure, revitalizing experience it was meant to be. For many, the morning shower is more than just a routine—it's a daily reset button. It’s where they shake off the grogginess, plan their day, and sometimes meditate thanks to the calming effect of the water. For years, the author never gave a second thought to the showerhead itself, until the once-powerful stream of water dwindled to a sad, uneven trickle. Then, the occasional musty smell turned into a permanent fixture. One morning, driven by frustration, they decided to investigate. They unscrewed the showerhead and were horrified by what they saw: a slimy, pinkish-black film coating the inside, with nozzles clogged by gritty, white deposits. This grim discovery led to a deeper understanding of how a dir...

Chinese Space Washer Uses Ozone and Minimal Water

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Challenges of Washing Clothes in Space Washing clothes in space presents a unique set of challenges. Unlike on Earth, where water is abundant and easily accessible, astronauts face significant limitations when it comes to water usage. As a result, they often wear their clothes until they start to smell and then discard them in cargo capsules that eventually burn up in Earth's atmosphere. This practice not only leads to waste but also increases the weight of supplies that must be transported into space. To address this issue, Chinese scientists have developed an innovative solution: a space laundry machine designed to wash clothes with minimal water and no detergent. This breakthrough could significantly improve the sustainability and efficiency of space missions. The Space Laundry Machine The space-dedicated washing machine was developed by the China Astronaut Research and Training Center under the China Manned Space Agency (CMSA). According to reports, the machine uses mist an...

China's Space Agency Unveils Detergent-Free Ozone Washing Machine for Space Use

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Innovations in Space Laundry: A New Approach to Cleaning Clothes in Zero Gravity Washing clothes in space presents a unique set of challenges. Unlike on Earth, where water is abundant and easily accessible, astronauts face significant limitations when it comes to using water for daily tasks. This scarcity has led to unconventional practices, such as wearing clothing until it becomes smelly before discarding it into cargo capsules that eventually burn up in Earth’s atmosphere. Recently, Chinese scientists have introduced a groundbreaking solution to this problem. A new space washing machine has been developed by the China Astronaut Research and Training Center (CARTA), part of the Chinese Manned Space Agency (CMSA). This innovative device is designed to clean clothes with minimal use of water and no detergent, addressing the growing need for sustainable laundry solutions in space. How the Space Washing Machine Works The machine operates using a combination of mist and ozone. Instead...