Yes, there is global warming on the planets
Earth and Mars. Whether its due to human activity or changing flux of flow of plasma on the surface of the sun and resulting changes in solar winds is the rub. Global warming has occurred on Earth numerous times.
Latest UN study predicts a 17-inch rise in the ocean's heighth vs Gore's movie that predicts a 20-foot rise. GIGO again, when one uses computer models unconnected to actual occurrence.
As the islands being inundated, are we to assume the oceans rises in certain spots and not everywhere, in contradiction with the laws of phsics? The islands rest on tectonic plates that rise and fall. There are other reports of islands rising, that don't make the news.