Well, not so fast. According to the European Space Agency Earth's gravity IS being thrown off by Antartica's rapidly melting ice. Fluctuations in the gravity field have been detected as far as Canada. Researchers now fear the collapse and dissolution of the Southern polar ice cap has become irreversible and the effects (other than a 16-ft rise in sea level) are unknown. So what could happen if gravity is weakened? Could things not rooted to the Earth could fly off? More than likely, Earth would loose some of it's atmosphere making life more difficult for anything that needs oxygen. Now THAT is scary.
And let's not even talk about the Near-Earth Object, asteroid 99942 Apophis, that is predicted to be the closest fly-by ever. It will fly between the Earth and the Moon on Friday, April 13, 2029 (just our luck), slingshot around, and may hit Earth in 2036. All the more reason to party like it's