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museum tourist: san diego natural history
Tagged Under : AAAS, museum, paleontology, photo
Every year during the AAAS meeting, there’s an evening reception where some big science journalism awards are presented. This year, the reception was Friday night at the San Diego Natural History Museum in Balboa Park.
I caught the first shuttle bus to the museum. When they opened the doors and let in the flood of science writers, a guy was standing near the entrance telling us there was food on the second floor. I thought, this guy knows what he’s talking about, and asked him what exhibit I must not miss. He told me to go see the fossils on the second floor. Fossils and food? Clearly that’s where I needed to be.
First: I was impressed that all the signs are in both English and Spanish.
Way to reach out to your population, San Diego. I am delighted to report that the Spanish for “Extinct giant sea cow” is “Vaca marina gigante extinta.”
All the fossils in the museum’s fossil exhibit -are local. So as you go through the exhibit, it goes back in time, telling you what San Diego was like in that era and what kinds of critters walked or swam here. This is a walrus from the Pliocene, when San Diego was under water.
It’s head-down, sucking up clams like it would in real life. (The label says modern Arctic walruses feed this way, too.)
The fossil section continued backward, to a section on San Diego’s Eocene rainforest, with funky-looking mammals in the trees. All along, there were cool interactive things – and physical things to do, not just computer screens to poke at. This one lets you sift sand for tiny fossils:
You tilt the sifter thingy back and forth and back and forth until the sediment all runs through the grate and some fragments of bone appear.
Nerd moment: I saw this and said, “Ohmygod, K-T boundary.” The rock above the pale stripe in the middle is Tertiary (T) and the rock below it is Cretaceous (K – from the German “Kreide” for chalk). That pale stripe is the remnants of the event that killed the dinosaurs.
So, below the line, dinosaurs; above the line, no dinosaurs, and a lot more mammals. There’s also lots of neat stuff in the K-T boundary that point toward an asteroid impact as the thing that killed the dinosaurs, like a high concentration of iridium, an element that is a lot more common in asteroids and comets than it is on Earth.
I sat down to eat some tasty, tasty dinner with two strangers who turned out to be highly entertaining. After a while, someone else came and sat with us – and I realized he was the guy who’d told me to go look at the fossils. He turns out to be the museum’s executive director, a job he’s had for 18 years. One of our first questions was why the pendulum wasn’t going. “It should be,” he said.
(It turns out you actually start it by standing outside with a long stick, but this is more fun.)
He also showed off this totally cool globe-shaped screen thing – you can choose from a bunch of different programs, like a plate tectonics one, and it shows you how the planet changed over time. I think in this picture, it’s showing how glaciers advanced and receded during the last ice age (and, correspondingly, how sea levels changed all over the world).
He was clearly proud of his museum’s cool exhibits.


The Science Channel posted more quizzes!
I’m cleaning off the bulletin board by my desk and came across a couple of blog ideas I’d meant to write a while ago, so here’s one of them. I’ve now been back from Berlin for almost four months, but I don’t think it’s too late to tell you the things I most appreciated when I got home in October 2009.