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Cells are particularly good at solving mazes, according to a 2020 Science study that demonstrates how they are able to navigate long and complicated routes through the body using self-generated chemoattractant gradients. Learn more: #ScienceMagArchives

Science Magazine

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44,926 次观看 • 11 个月前 •via X (Twitter)

科学技术 #ScienceMagArchives

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The better humans have gotten at making plastic, the more challenging it has been to unmake it—especially the pieces too small to see. Long after plastic bottles and bags break down, they keep fragmenting into particles so tiny, conventional filtration can’t touch them. They drift through treatment plants and into waterways unimpeded. There, they enter the food chain, and ultimately the body, where they have been found in human organs and are increasingly linked to various diseases such as cancer. Enter nanobots. In a new study, researchers show that tiny magnetic machines made of cagelike materials can tumble through water, sweeping up nanoplastics via the same electrostatic attraction that makes a balloon cling to your hair. Learn more: News from Science

The better humans have gotten at making plastic, the more challenging it has been to unmake it—especially the pieces too small to see. Long after plastic bottles and bags break down, they keep fragmenting into particles so tiny, conventional filtration can’t touch them. They drift through treatment plants and into waterways unimpeded. There, they enter the food chain, and ultimately the body, where they have been found in human organs and are increasingly linked to various diseases such as cancer. Enter nanobots. In a new study, researchers show that tiny magnetic machines made of cagelike materials can tumble through water, sweeping up nanoplastics via the same electrostatic attraction that makes a balloon cling to your hair. Learn more: News from Science

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Not all signalling gradients are exponentials. Dicty cells (green nuclei) migrate towards their food source, bacteria (white), concentrating the signal (bacteria) at the front and redistributing it to the rear. Side view captured by Hugh Z Ford @chubblab using a 3i diSPIM.

Not all signalling gradients are exponentials. Dicty cells (green nuclei) migrate towards their food source, bacteria (white), concentrating the signal (bacteria) at the front and redistributing it to the rear. Side view captured by Hugh Z Ford @chubblab using a 3i diSPIM.

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Ukranian army started using horses, since it’s a good way to get through woods and muddy paths. Watch Ukranians who mocked Russia for using horses … now switching to explains how horses are good and genius.

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Good morning, Most communities are currently without electricity,as a result you might be unable to get through to your families. We are hoping they will be able to send through calls and messages soon. 🎥: Fyffes Pen, St.Elizabeth

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.UNICEF's latest report underscores an urgent problem: More than one billion adolescent girls and women are undernourished. Read the report to learn how we can navigate our way out of this crisis:

.UNICEF's latest report underscores an urgent problem: More than one billion adolescent girls and women are undernourished. Read the report to learn how we can navigate our way out of this crisis:

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Bali has been hit by severe flooding, prompting authorities to declare a week-long state of emergency on the island. Tourists are advised to remain in their accommodations and plan routes with restrictions in mind. According to officials, 14 people have died and two are still missing. More than 560 residents have been evacuated to temporary shelters.

Bali has been hit by severe flooding, prompting authorities to declare a week-long state of emergency on the island. Tourists are advised to remain in their accommodations and plan routes with restrictions in mind. According to officials, 14 people have died and two are still missing. More than 560 residents have been evacuated to temporary shelters.

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Some regions on the Sun stay active for months... and they may produce far more solar flares than expected. Using data from this citizen science project, researchers found these long-lived regions are 3–6× more likely to produce the Sun’s most powerful flares:

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“Just a reminder that people won’t be able to go to the store and feed their kids this month. They won’t be able to get what they need let alone want.” Here’s my reminder to you that these people are not necessarily getting what they need, they are getting what they want. And another reminder that it should not be the responsibility of the American taxpayer to pay to feed your children when you are enable body to dull, who can go get a job and take care of your own babies. Step up and do better.

“Just a reminder that people won’t be able to go to the store and feed their kids this month. They won’t be able to get what they need let alone want.” Here’s my reminder to you that these people are not necessarily getting what they need, they are getting what they want. And another reminder that it should not be the responsibility of the American taxpayer to pay to feed your children when you are enable body to dull, who can go get a job and take care of your own babies. Step up and do better.

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Fox News: Contrary to U.S. claims, ships are using the route designated by Iran. The U.S. Navy's Central Command stated that the southern route through the Strait of Hormuz remains open and has been expanded. According to the U.S., the other routes are not protected. However, yesterday, 22 ships passed through the Strait of Hormuz. Only one ship used the route through Omani waters, while the majority, 21 ships, chose the route designated by Iran.

Fox News: Contrary to U.S. claims, ships are using the route designated by Iran. The U.S. Navy's Central Command stated that the southern route through the Strait of Hormuz remains open and has been expanded. According to the U.S., the other routes are not protected. However, yesterday, 22 ships passed through the Strait of Hormuz. Only one ship used the route through Omani waters, while the majority, 21 ships, chose the route designated by Iran.

𝕊𝕡𝕣𝕚𝕟𝕥𝕖𝕣 𝕻𝕣𝕖𝕤𝕤

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🚨 BIOLOGY UPDATE Scientists are discovering that mitochondria — the tiny powerhouses inside your cells — may communicate using ultraweak flashes of light. Not metaphorically. Actual light. Which means inside you right now… trillions of microscopic structures may be exchanging information through glowing biological signals invisible to the human eye. The strange part? Your body may be far less “mechanical” than we once believed. You are not just chemistry. You are electrical. You are energetic. You are alive in ways science is only beginning to understand. Maybe consciousness itself emerges from an orchestra of light deep inside living cells. The closer we look at life… the less dead matter it seems to become.

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I've been in Florida for 10 years now. We all learn what the pineapple means at a certain point.... The swingers in this state are creepy and aggressive. They are also legion. They signal to each other using pineapples. You've been warned!!

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After coming home from work and searching the entire house without being able to find her son, a woman finally looked through the door leading to the backyard and caught her son like this with the neighbor’s cat. Just look at them, how adorable they are!🥹❤️

After coming home from work and searching the entire house without being able to find her son, a woman finally looked through the door leading to the backyard and caught her son like this with the neighbor’s cat. Just look at them, how adorable they are!🥹❤️

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