Why you should care, and why this is revolutionary science:<p>Lightning has recently been found to generate positrons via gamma rays. This is very recent science and definitely underexplored and not yet solved via theory.<p><a href="http://science.nasa.gov/science-news/science-at-nasa/2011/11jan_antimatter/" rel="nofollow">http://science.nasa.gov/science-news/science-at-nasa/2011/11...</a><p><a href="http://www.agu.org/pubs/crossref/2011/2011EO220001.shtml" rel="nofollow">http://www.agu.org/pubs/crossref/2011/2011EO220001.shtml</a><p>A Tesla Coil this large looks a lot like a lightning generator, an opportunity to explore the space where electrical arcs become lightning.<p>Lightning had also been hypothesized to produce x-rays for a long time, with evidence of x-rays in lightning only confirmed in 2001. The creation of x-rays by lightning bolts is also not completely explained by theory.<p>Basically, lightning is extremely poorly understood for such a basic natural phenoma and there is ample room for exploration, possibly leading to economical ways of generating antimatter.