Since modern plastic was first mass-produced, 8 billion tons have been manufactured. And when it's thrown away, it doesn't just disappear. Much of it crumbles into small pieces. Scientists call the tiny pieces "microplastics" and define them as objects smaller than 5 millimeters -- about the size of one of the letters on a computer keyboard. Researchers started to pay serious attention to microplastics in the environment about 15 years ago. They're in oceans, rivers and lakes. They're also in soil. Recent research in Germany found that fertilizer made from composted household waste contains microplastics. And, even more concerning, microplastics are in drinking water. In beer. In sea salt. In fish and shellfish. How microplastics get into animals is something of a mystery, and Chelsea Rochman is trying to solve it.rnrnSince she started studying microplastics, Rochman has found them in the outflow from sewage treatment plants. And they've shown up in insects, worms, clams, fish and birds. To study how that happens, [researcher Kennedy Bucci] makes her own microplastics from the morning's collection. She takes a postage stamp-size piece of black plastic from the jar, and grinds it into particles using a coffee grinder. "So this is the plastic that I feed to the fish," she says. The plastic particles go into beakers of water containing fish larvae from fathead minnows, the test-animals of choice in marine toxicology. Tanks full of them line the walls of the lab. Bucci uses a pipette to draw out a bunch of larvae that have already been exposed to these ground-up plastic particles. The larva's gut is translucent. We can see right into it. "You can see kind of a line of black, weirdly shaped black things," she points out. "Those are the microplastics." The larva has ingested them. Rochman says microplastic particles can sicken or even kill larvae and fish in their experiments.
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Over the past 80 years sardine and anchovy have become icons of modern-day marine biology, oceanography and climate research.
The oxygen is being sucked out of the ocean, and while much of it is happening far below the surface, it will still affect us above.
The salmon look stressed. Behind the algae-streaked windows at Seattle's Hiram Chittenden fish ladder they're bumping heads, flipping in the current, and pointing their narrow jaws upstream. To get
When Amanda West Reade was pregnant with her now two-year-old son, she started eating farmed salmon. As a vegetarian, she knew that getting enough protein, omega-3s, and folic acid to boost her growing baby's development might be tricky. "My doctor listed a few meal ideas and I thought I could handle the salmon," says Reade.
Globally, we still catch enough fish to eat - just about. But numbers of fish caught from the sea haven't kept up with human population growth and unsustainable fish farms have filled the gap. So why are
The Natural Resources Defense Council works to safeguard the earth - its people, its plants and animals, and the natural systems on which all life depends.
Report shows Alaska, Florida, Gulf of Mexico and north-eastern fisheries are responsible for more than half of discarded fish
E' proprio il post di San Valentino. Crude oil is known to disrupt cardiac function in fish embryos. Large oil spills, such as the Deepwater Horizon (DWH) disaster that occurred in 2010 in the Gulf of Mexico, could severely affect fish at impacted spawning sites.Science, 14 Febbraio 2014 Sul numero di Science del 14 Febbraio 2014 è comparso
Turns out that the fungicide in dandruff shampoo is less fun and more -icidal than you'd hope.
A Newcastle sailor's trip across the Pacific Ocean after the Japan tsunami was frighteningly similar to a nightmare.
The oceans are becoming warmer, more acidic, starved of oxygen, and less productive. Here are the results, in technicolor.
Ocean acidification is increasing at an unprecedented rate, according to a study published in August 2013 in Nature. As oceans absorb carbon dioxide (CO2)
China's fishing vessels dominate the planet's seas-in fact, it has the biggest distant-water fleet in the world. That fleet is pulling in an estimated 4.6 million tonnes (5.1 million tons) of fish, worth around $10 billion annually, though it reports catching around 12 times less than that. Tuna's a big chunk of it, given its value (a Pacific bluefin tuna went for $1.76 million at a January auction in Tokyo). The pricey fish made up an estimated 15% of its total catch (pdf, p.3), by volume, in 2010.
A day or two earlier, I would have looked right past the Spanish mackerel. The clams, too, most likely. Usually, when I stop by the fish counter to pick up something for dinner, I go for halibut, or maybe some sort of cod or bass. If we're grilling, I might grab a few whole branzino
The Greek yogurt boom has produced an unfortunate byproduct: tons and tons of whey.
Recent plans to clean plastics from the five massive ocean garbage patches could do more damage to the environment than leaving the plastic right where it is. There is no doubt that the focus on cleaning
What's that animal on the front of your O'Reilly book? You'll find it listed here.
Un argomento del quale si parla poco ma che sta diventando forse uno dei principali rischi ambientali è la drastica riduzione degli stock ittici. A livello europeo stiamo consumando più pesce di quello che i nostri mari sono in grado di fornire, rendendoci dipendenti dal pesce proveniente da altre zone. Il Rapporto "Fish Dependence: The increasing