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Microscopic fragments of plastic are a "major pollutant", floating in the ocean, settling on seabeds, and washing up onshore - with unknown consequences for marine ecosystems, according to a new study. "We've found this microscopic plastic material at all of the sites we've examined," [lead researcher] Dr Richard C Thompson [of University of Plymouth, UK] said. "Interestingly, the abundance is reasonably consistent. So, it suggests to us that the problem is really quite ubiquitous."
posted by mcgraw on May 7, 2004 - 15 comments

Walking DNA Scientists have created a microscopic walking robot using only the building blocks of life. The robot’s DNA legs move along a DNA footpath, taking a nanostroll in a bath of a liquid called a "nondenaturing buffer", which stops the DNA from falling apart.
posted by mcgraw on May 6, 2004 - 10 comments