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On August 4, 2011 After Dark Blue delved into the color of cool with explorations of indigo, underwater vision, color photography, and blues performances by Lady Bianca, Bobbie Webb, and Fillmore Slim.

Join Exploratorium educator Ken Finn as he unlocks the mystery behind the black sand (a.k.a. magnetite) at Ocean Beach. This piece explores the origin of magnetite in the Sierra Nevada mountains, its journey down the Sacramento and San Joaquin rivers to the Bay, and the interesting physical properties of this mineral, plus some fun things you can do with it.

Framing of the Exploratorium's Observatory Building, the only completely new construction at at the piers, began in April 2011. Iron workers placed various sizes of steel beams in piles around the concrete base of the Observatory. Then, while a crane raised and held each beam aloft, the workers used metal spikes to line up the holes of the beams and inserted bolts, tightening them down to tie the structure together. Because the Observatory Building is less than two stories tall, the iron workers were allowed to shimmy across the beams without harnesses. Once this process was finished, the beams were plumbed and welded together.

Intuit Founder Scott Cook, NOAA Administrator Jane Lubchenco, Former Los Angeles Unified School District Superintendent Ramon Cortines, and Retired Congressman Vernon Ehlers join KQED's Dave Iverson for a lively conversation on the topic of Science for Decision Making. This discussion was recorded at the Exploratorium's 34th Annual Awards Dinner on May 4, 2011.

Just outside the hum and buzz of San Francisco, there's a hum and buzz of a different sort. It's the sound of thousands of acres of almond crops being pollinated by bees—bees in such demand that they must be trucked in from as far as Texas. Almond grower Dave Phippen explains why. keeping this winged labor force happy and healthy is a vital but tricky business.

Come out to play on the concrete slides at Seward Street Mini Park in the Castro. A series of speed tests guided by physicist Paul Doherty takes on the question asked by sliders everywhere: How can I go faster?

In January and February of 2011, the first of the large 72" in diameter piles were driven 160 feet in to the sea floor at Piers 15 and 17 in San Francisco, the new home of the Exploratorium. These new piles were installed between the two piers and along the south apron of Pier 15. In early March, the steel casings were filled with concrete.

Josh Short from the Cardboard Institute of Technology walks us through their latest installation, Subterrain, on the Exploratorium floor!

This After Dark event was devoted to the ever-mysterious and otherworldly dimensions of sleep, darkness, and night.

A short video created about an iconic exhibit at the Exploratorium, Ned Kahn's Chaotic Pendulum. An apparently simple set of pendulums is given an initial twist. Intuition says that the resulting motion of this simple system should be, if not simple, at least predictable. Intuition doesn't work with this device though, and its motion is an extremely complicated, and somewhat whimsical, twisting and turning that defies the predictive powers of physics.