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CLASH of the Galaxy Clusters

Galaxies do not usually exist alone. They tend to bunch together in small groups, like the Local Group of galaxies in which the Milky Way sits, or larger groups called clusters.

November 16, 2011 — Kelly Oakes

Do Women in Groups Bleed Together? On Menstrual Synchrony

Tenth grade, at the lockers just before homeroom. My good friend Julie and I put away our coats.“How are you?” she asks.“Ugh,” I say. “I have a soccer game today but” – and here my voice drops to a whisper – “I got my period this morning.”Julie looks back at me, wide-eyed...

November 16, 2011 — Kate Clancy

New Heart Disease Test Brings Higher Costs and More Procedures

In the prevailing more-is-better culture, patients often jump at or at least surrender to the latest and greatest medical test. New imaging technology is gaining crispness with each passing year, and advances in the past several years has enabled doctors to peer inside the body to detect tiny tumors or the beginning of a blocked artery—all without slicing the skin...

November 16, 2011 — Katherine Harmon

Antibiotics with a side of steak

We’re in a sad and weird place in biomedical science. In the 1940’s we got penicillin, in the following 30 years another 13 different classes of antibiotic were introduced.

November 16, 2011 — James Byrne

Redrawing the United States of America

Borders are all-important imaginary lines that affect our lives in myriad ways. They define in a very literal sense where we live, who we call neighbors, and how we are governed.

November 16, 2011 — Tim De Chant

Hidden Find: Cannon's Walk at the South Street Seaport

The South Street Seaport is home to boisterous bit of New York City history. It's one of my favorite parts of the City, and although it's changing rapidly as lower Manhattan undergoes a residential transformation, I'm thrilled that it still has secrets to reveal.The door to 206 Front Street was open last week when I wandered over to the Seaport...

November 16, 2011 — Krystal D'Costa

Bacteria with bodies - multicellular prokaryotes

Bacterial cells are fundamentally different to the cells of multicellular animals such as humans. They are far smaller, with less internal organisation and no nucleus (they have DNA but it is not packaged safely within a membrane)...

November 16, 2011 — S.E. Gould

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Scientific American Unlimited

Scientific American Unlimited