I’ve been inspired to hop on this bandwagon by Chris Rodda of freethoughtblogs. http://freethoughtblogs.com/rodda
She’s been instrumental in debunking David Barton’s lies about US history, and that makes her a Big Freakin Hero in my book.
And, interesting fact: “Depending on latitude, the temperature beneath the upper 6 metres (20 ft) of Earth’s surface maintains a nearly constant temperature between 10 and 16 °C (50 and 60 °F)”. from this Wiki article about geothermal heating: http://en.wikipedia.org/wiki/Geothermal_heat_pump
I don’t know who came up with the kitty litter one, but I found it on Chris Rodda’s blog here: http://freethoughtblogs.com/rodda/2012/07/29/sunday-funnies-21/