We live on a planet careening toward environmental collapse that will be largely brought about by our own actions. And yet we struggle to grasp the scale of the crisis, barely able to imagine the effects of climate change just ten years from now, let alone the multi-millennial timescales of Earth's past and future life span. In this book, Vincent Ialenti offers a guide for envisioning the planet's far future-for becoming, as he terms it, more skilled deep time reckoners. For a case study in long-term thinking, Ialenti turns to Finland's nuclear waste repository "Safety Case" experts. The challenge, he says, is to learn to inhabit a longer now.