The sold-out conference is presented by the San Francisco Bay Conservation and Development Commission (BCDC), in partnership ...

When the seed coat bursts, steam cooks and fluffs the starch molecules as it's released. At some point, the pressure gets so high (up to seven times normal pressure!) that the seed coat bursts. The ...

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

Please enable JavaScript if you want to donate online. If you do not wish to do so or are having trouble, please call 415.528.4866 or email develop@exploratorium.edu ...

Change the atmosphere to change the water below. Create a carbon dioxide–rich atmosphere in a cup and watch how it changes the water beneath it. This model of ocean-atmosphere interaction shows how ...

Look through the free end of the tube, opposite the protractor, or sight along the tube’s top edge. Focus on something at eye level. Ask your partner to read the angle where the string crosses the ...

Use homemade conductive and resistant play-doh to build electronic sculptures that light up, move, and make sounds. Anyone who has ever tasted play-doh knows that it’s a salty substance. The salt ...

You’ve probably seen an ice skater spinning on the tip of one skate suddenly start to spin dramatically faster. A diver or gymnast may also suddenly flip or twist much faster. This speeded-up rotation ...

You may not be able to put a square peg in a round hole—but you can make a square wheel roll on a round road. Square wheels roll smoothly on a surface with bumps of the right size and shape. Using hot ...

Strange things can happen when your brain gets confused. Some objects or figures are “ambiguous,” providing visual input that your brain can interpret in more than one way. In this Snack, you’ll ...

A square wheel can roll smoothly—if the "road" is the right shape. A square wheel can roll smoothly—if the "road" is the right shape. A smooth ride on square wheels—amazing, no? This works because as ...