Someone sent this to me yesterday. Very interesting.

Luke 19:37-40
37 When he came near the place where the road goes down the Mount of Olives, the whole crowd of disciples began joyfully to praise God in loud voices for all the miracles they had seen:
38 "Blessed is the king who comes in the name of the Lord!"
"Peace in heaven and glory in the highest!"
39 Some of the Pharisees in the crowd said to Jesus, "Teacher, rebuke your disciples!"
40"I tell you," he replied, "if they keep quiet, the stones will cry out."

Earth Gives Off Mysterious Low Hum
http://www.livescience.com/php/video...0415-earth-hum

To quote a comment made by someone on the livescience.com page,