Ewen Callaway on Muck Rack

Ewen Callaway

Verified
West
As seen in: Nature, British Journal of Cancer, The Guardian, Aol, Biochemical Genetics, New Scientist, Scientific American, Substack, Flipboard, The Hindu, Yahoo and
Science journalist. Mostly listening. Views are my own. #Xdissenter (I’m on Blue Sky and LinkedIn) Get in touch: e.callaway@nature.com
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Articles

Making samples one billion times bigger lets simple microscopes pinpoint amino acids

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By Ewen Callaway Verified
| Nature Verified
High-resolution images can be produced by increasing the size of a nerve cell before fluorescence-microscopy imaging.Credit: Arthur Chien/SPL A technique that supersizes cells to reveal minute details has gone big — really big. Using a polymer like those used in nappies to make them super-absorbent, scientists have expanded the volume of biological samples so they are one billion times bigger — 1,000-fold larger in each dimension.
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Cell transplant across the tree of life hints at how animals emerged

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By Ewen Callaway Verified
| Nature Verified
Researchers transplanted cells between embryos of a comb jelly (Mnemiopsis leidyi, right) and a starlet sea anemone (Nematostella vectensis, left).Credit: Paul R. Sterry/Nature Photographers Ltd/Alamy, Phil Degginger/Science Photo Library More than a century ago, embryologist Hilde Mangold conducted a strange experiment that transformed biology. As a PhD student in the 1920s, she moved a lump of cells from embryos of one newt species into another.
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Ancient ground squirrels feasted on carcasses like ‘zombies of the Pleistocene’

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By Ewen Callaway Verified
| Scientific American Verified
Ground squirrels spend many months in a winter slumber, and then awake ravenous and eat anything and everything in sight. A study of 700,000-year-old DNA from coprolites — fossilized poo — has now revealed that when ancient relatives of ground squirrels (Urocitellus sp.) woke up, they ate a diverse diet of plants, insects and carcasses of megafauna, including woolly mammoths, bison and big cats.
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