Cold Earth is a speculative look at a scenario unlikely yet possible: An eternal ice age caused by a near miss with an interstellar object. Having dodged a deadly fate, the survivors of Earth find themselves in a world devoid of most of what was once ordinary. Through diversification, Earth's biota find a way, struggling against the elements, competing against and cooperating with each other. In this chapter of Earth's history that never happened, discover what odd creatures have made this world their home.