Politicians need a better understanding of global ecology. We need to be freed from our species-specific arrogance. No evidence exists that we are chosen, the unique species for which all the others were made. Nor are we the most important one because we are so numerous, powerful and dangerous.
Einstein theorized that time travel was possible, but he was looking at it as unidirectional, going forward. Traveling into the past is much more problematic, as countless stories have demonstrated!