Partly to help explain solar eclipses, the ancient Egyptians had a story about the serpent god Apep, the Uncreator, who tried to swallow the sun god Ra as he crossed the sky. Apep -- the Greeks called him Apophis -- personified death, destruction and chaos. His opponent was the goddess Ma'at, who represented all that was light and truth. Now, a group of NASA scientists is hoping Ma'at will once again help humans ward off the harbinger of destruction.
Fashion and technology are not usually mentioned in the same breath. However, two different innovators in the world of fashion have blurred the boundaries between performance, art, environment, and technology with their avant-garde endeavors. We're not talking couture lab coats (...yet), but we are talking magically disappearing dresses, skirts that double as furniture, and British models that are naked faster than you can say macromolecule.
Overall, how would you say things are these days? Would you say that you are very happy, pretty happy, or not too happy? This is the question participants in the University of Chicago's General Social Survey have been answering since 1972. Recently, University of Pennsylvania economists Betsey Stevenson and Justin Wolfers took this survey's data from 1972 through 2006 to see if people had gotten happier since the decade of bell bottoms and disco.
It's been a hot week in the science of sex. First of all, for all of you Intactivists out there (and I know there are a lot of you round these parts), a major finding might bolster your claim that routine circumcision isn't worth the risk.
Last week, we investigated the principle of conservation of angular momentum on a spinning carousel. In this episode we illustrate the linear version of the same principle -- conservation of linear momentum -- as illustrated by the physics-based computer game Red. The goal of the game is to avoid being crushed by a relentless barrage of incoming meteorites, by deflecting them with cannon balls. Understanding a little bit about conservation of momentum is a consolation in the face of the reality that sooner or later you are going to get flattened.
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In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.
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