Sunday 12:00 pm–5:00 pm (Daytime Members/Donors Only 10:00 am to Noon) ...

Substitution ciphers and decoder rings We use substitution ciphers all the time. (Actually, substitution ciphers could properly be called codes in most cases.) Morse code, shorthand, semaphore, and ...

What else can I do nearby? The Ferry Building features a wealth of shopping and dining choices as well as a farmers’ market several days a week. (You can also catch a ferry to many points in the Bay ...

"writing in science is not only for communicating with others; it is also a tool for learning that supports scientists and students alike in clarifying thinking, synthesizing ideas, and coming to ...

Store up an electric charge, then make sparks. Tired of electrostatic experiments that just won’t work? This experiment will produce a spark that you can feel, see, and hear. Rub a foam plate with ...

A colored object may look different against different-colored backgrounds. In this investigation, you'll discover how colors seem to change when you place them against different-colored backgrounds.

Here’s a cow’s eye from the meat company. The white part is the sclera, the outer covering of the eyeball. The blue is the cornea, which starts out clear but becomes cloudy after death. Step 2: ...

It might seem obvious to say that earthquakes do most of their damage by shaking the ground. But groundshaking is actually a complex phenomenon. Engineering the seismic safety of a structure involves ...

You need to enable JavaScript to run the "Ron H: Age on Other Worlds" app.

Make a simple mini-motor. A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! You’ve created ...

Middle Ground, allows people to drop their guard for a bit, enjoy the presence of others, and learn something new. Fifteen interactive exhibits, a coffee cart, and chairs and tables create a space for ...

What Is a Solar Eclipse?