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Get flash to fully experience Pearltrees
http://www.instructables.com/id/How-to-build-a-Tesla-Coil/ This Instructable will walk you through building a medium sized Tesla coil.

Build a Tesla Coil

Melting steel in a solar oven (aka solar concentrator) isn't new or unique, but it's always cool to see and a good reminder of just how much energy is hitting the sunny side of the planet at any moment. http://www.treehugger.com/clean-technology/melting-steel-with-only-the-sun-video.html

Melting Steel w/ Solar Energy

Welcome to Hunkin's Experiments.

Hunkin's Experiments

http://www.hunkinsexperiments.com/default.htm
http://www.planetguide.net/cool/yeast_activity.html Respiration is an important part of the global carbon cycle.

Yeast Solution Experiment

http://learn.genetics.utah.edu/content/labs/extraction/howto/

Extracting DNA

Add a pinch of enzymes to each test tube and stir gently.