At present Earth is closest to the Sun in early January, so summers in the south sub tropic zone would kill most of the life there, but 70 degrees c is unlikely even in shallow ponds. It might take a century to melt all of Antarctica after which the summers would be still hotter thoughout the Southern hemisphere. The oceans would rise about 600 feet due to the melting of ice above sealevel and expansion of the warmer ocean water. The ocean currents would be changed during the ice melting phase. Air circulation would change drasticaly during the ice melting phase and there would be new changes in air and water currents as the ice caps disapperared. The far north part of the north temperate zone and arctic zone would have much milder winters, and long, cooler summers. Carbon dioxide and water vapor in the air might double on the average. Summers in the North temperate zone might be colder than winters, because Earth is about twice as far from the sun in July. The tropic zone and sub tropic zones would also have dangerously high temperature in January and Feburary. The year would increase to almost 400 days = 33 day months. It might take 10,000 years until there was only one thousand cubic miles of the 4 degree c water at the bottom of the oceans. Please embellish, refute and/or comment. Neil