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In-Depth Reports

The Pi Day of the Century

The first five digits of pi, 3.1415, is being celebrated on March 14, 2015, with a day for math fun, circular logic and, of course, pie eating

March 13, 2015

Keep Your 2015 Resolutions

Whether you want to conquer bad habits or build a healthier routine, you can learn how to pick and stick to any goal

February 7, 2015

The Hobbit: 10 Years Later

In October 2004 paleontologists announced a new human species called Homo floresiensis . Ever since then debate has raged on whether it truly is a new species or merely a diseased Homo sapiens...

October 23, 2014

What's New in Cancer Research?

Cancer is not just one disease; it is many.The latest advances in genetics, immunology and cellular biology  are paving the way to better treatments (and perhaps even a few cures) for all of them 

October 14, 2014

The 2014 Nobel Prizes

The brain's inner GPS, blue LEDs and a super-high resolution microscopy technique were the discoveries that took the prestigious honors this year

October 9, 2014

Love among the Primates

Promiscuity, polygamy, monogamy—over the course of millions of years, humans and their primate relatives have tried nearly every possible mating arrangement

September 5, 2014

In Defense of Science

Steady, sufficient investments in basic research are necessary to ensure the continued success of the U.S. in the future, four expert witnesses, including Scientific American ’s editor in chief, testified to Congress...

July 22, 2014
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Scientific American Unlimited

Scientific American Unlimited