Compare a coffee bean to a single atom

I've previously blogged on Powers of Ten, a classic book that illustrates relative sizes of various things, both extremely large and extremely small. I just ran across a terrific website that illustrates that relative sizes of many kinds of small things, the largest of which is a coffee bean. When you go to this site, wait a bit so that it finishes loading. Then move the horizontal slider slowly to the right and enjoy your journey into the universe of small and smaller things, all the way down to a carbon atom. [applause!]

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What to do about your dead Facebook friends

What can be done about your Facebook friends who die? According to an article by Mary Elizabeth Williams at Salon.com, Facebook is coming up with some solutions centered on "memorial pages." Williams also gives this advice:

Be careful what profile pic you post or what your friends write on your wall -- it might be your last enduring image.

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Halloween: Whence the pursuit of horror?

Some of the neighborhoods near my house in St. Louis have already celebrated Halloween. For instance, my street celebrates Halloween on the Sunday afternoon prior to Halloween. Celebrating in the daylight makes it easier for us to visit with little neighborhood children and their parents. The nearby Compton Heights neighborhood celebrates Halloween on the Saturday night prior to Halloween. Our family was invited to venture over to Compton Heights a few nights ago, and we weren’t disappointed. head Amidst all of the traditional candy-giving, we stumbled upon one particular house where the family had put together its own haunted house. The family owns a big old house, but also owns a separate large two-story carriage house in the back. They hired an electrician to wire up the carriage house with sophisticated lighting and they assembled a team of 20 friends and family to pose as various types of dead people inside the house. Not typical dead people, mind you. Dead people who stand still in the dim lighting and come alive just when you are convinced that they are mannequins (and there were quite a few mannequins too, some of them dismembered). When selected dead people came alive, they yelped, or they screamed; some of them reached out and grabbed you. There were ghouls and ghosts, a vampire, a mummy, floating bones, a guy with a “chainsaw,” and a beheaded guy who suddenly moaned, all of this horror looking rather real and all of these characters lurking carefully amidst the dim lighting as we toured this incredible house. front-of-haunted-houseEach of the photos in this post is from this house. Note that it’s not always easy to take photos in a darkly lit haunted house. While I was taking a photo of a decapitated head on a table, for instance, a dead man reached out and tugged on my sleeve, smudging the long exposure. How good was it? I stood outside for 30 minutes after I toured the haunted house, and every ten minutes or so, I saw a panicky grown child running from the haunted house crying. Bravo! I then learned that the haunted house family has been putting on this magnificent show, for free, for 15 years. Double Bravo! But as I walked away from the haunted house, I wondered two things.

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What if there weren’t any other living great apes?

During my recent visit to the St. Louis Zoo, I wondered how it would have been had humans been the only species of great ape still alive on the planet. I suspect that there would have been quite a few preachers out there suggesting that the animals represented by the fossils of other species of great apes were not at all similar to humans. I can imagine them preaching with great confidence that there wasn't any credible evidence that any other living animal was ever remotely similar to humans in physical appearance or facial expressions, regardless of the fossils. Image by Erich Vieth They would call it laughable to suggest that any other species of great ape was a tool user, or that any other species of great ape exhibited emotions akin to those displayed by humans. And they would have argued without any doubt that it was silly to suggest that communities of the other great apes would have ever exhibited such things as reconciliation, empathy and proto-morality.

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