You may know that much of the climate change on earth over the last two million years-the coming and going of ice ages-is caused by the "orbital geometry" of the planet. The amount of planetary tilt and the time of year the tilt occurs change over time. When the Northern Hemisphere is less tilted towards the sun on June 21st, and at the same time the Earth is as far from the sun in its elliptical orbit as it ever gets, ice age conditions prevail. This makes ice ages on Earth pretty regular, cyclic, events....
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It's mid-January and you are probably contemplating whether we'll get another snow day this week. Or maybe you are thinking about your upcoming ski trip? Or how you'll pay your heating bills? any case, winter is probably on your mind.
“Soon the earth will tilt on its axis and begin to dance to the reggae beat to the accompaniment of earthquake. And who can resist the dance of the earthquake, mon?” –Peter Tosh
One of the options that came with my new car (I bought one that they had on the lot) was an "Eight-Way Power Driver's Seat." As a physicist, I thought this sounded pretty exciting, because, you know, we appear to live in a three-dimensional world, and to get eight directions of adjustability woul
Michael Behe, that Don Quixote of "intelligent design" who never tires of tilting at windmills of "fatal flaws" in evolutionary theory that he think he's identified, did quite a bit of tilting at HIV in his book.