basic astronomy tels us that "we" will not be here for ever nor will the ice caps. no it wont be in our life time, so we should do htings that can improve our short term longevity on this planet
Supernova for Dummies version:
Scientists say that a star's lifetime is around 10 billion years old, and right now the Sun is about 5 billion years old, so it should be (you can do the statistical math). When the Sun goes supernova, be ready to say bye bye to mommy.
After 10 billion years is up the Sun will start to expand and swell up like a fat man at an all you can eat bar. As it increases in size, it will devour Mercury, Venus and com a little too close to home. As the temperature increases we will be toasted beings, actually dead ones. The crust of the sun would remain rather cool than normal, only about 3,000 kelvin. Its normal temperature is about 6,000 kelvin. Within a quick time the star's core collapses and then explodes, leaving a black hole, matter and some heat from the sun being blown out into space. The explosion can be seen from many galaxies away due to the bright light it emits. Strong gravitational pulling occurs as the black hole sucks everything into oblivion. Now on your merry little journey to oblivion, planets, comets and mass objects may collide creating catastrophes within a catastrophe.