A New Theory of the Earth the flood. He asserted that the Earth was originally a comet, which God formed from its initial "chaos and void" into a habitable planet. He also argued that the flood itself was caused when the Earth passed through the tail of a comet, which, it was known by that time, are composed largely of water. His analysis was very detailed, and similar ideas were promoted in the 1960s by other creationists postulating causes for the global flood, along with similarity to the ideas of Immanuel Velikovsky. However, many of them are in direct conflict with contemporary scientific understandings; and comets
2007 Guatemala City sinkhole on the city's aging sewerage system, and have speculated that more piping failures are likely to develop unless action is taken. Several rainstorms also contributed to the sinkhole's collapse, as stormwater percolated into the ground, further dissolving the rocks beneath Guatemala City. Citizens of Guatemala City near the sinkhole also reported hearing rumblings a few weeks before its collapse. The INSIVUMEH (Guatemala's seismology institute) had placed a seismic meter there before the disaster; a robotic camera system was supposed to enter the cavity, but the disaster occurred first. On February 23, 2007, the sinkhole collapsed, forming a very large, deep