Swim down under Hawaiian waters with PBS Digital Studios’ UnderH20 team to watch how lava from the rumbling Kilauea crater bursts into the Pacific Ocean, and then quickly cools to form what’s called pillow lava.

Another underwater adventure in the archives: diving under a lake covered with Antarctic ice.

These wasps are trying to cool their overheated nest. One brings a droplet of water to assist. Alan Teitel captures it at 4,700 frames per second. A moment of appreciation for nature and a moment of appreciation of technology at the same time: this is 0.8 seconds of real time stretched out into 2m15 seconds of slow motion.

Slow motion insects in the archives: ladybugs unfolding their wings here and here, Dance of the Honey Bee, and The Hidden Beauty of Pollination.

via Laughing Squid.

A pretty spectacular science experiment: how to make an Incredible Egg Geode. 

Your egg geode is formed through a process called sedimentation. The heated alum solution contains suspended particles of alum powder and as the solution cools, these particles of alum begin settling. When the alum particles settle towards the bottom of the beaker or glass, they begin crystallizing. With the alum-covered egg at the bottom, the alum particles from the solution begin attaching themselves to the egg. Covering your egg in alum powder beforehand gives the suspended alum particles a surface to which they can more readily attach themselves. The particles that settle onto the surface of the egg crystallize, and you will also see crystallization on the bottom and sides of the beaker or glass.

Every day, on a Tumblr called “The Daily Pothole,” New Yorkers get a peek inside the inner workings of a city system few knew existed: the men who repair our potholes. Tumblr spent a day with the crew that makes up New York City’s pothole repair team.

A red hot ball of nickel is dropped in a cup of water, resulting in a most unexpected reaction, in this demonstration of the Leidenfrost effect by Carsandwater.

via Laughing Squid.