If Berlin were to become a climate-neutral city within the next 25 years, daily life could be radically different. Emilia wakes to a brilliant glare bouncing off her neighbor's solar panels. Emilia often gets up at sunrise for a quick dip in the Spree River — much to her parents' dismay. What's more, Berlin's expanded rollout of solar panels and wind parks and regional energy sharing means it now runs on 100% renewables. Afterword: This is just one possible version of 2050 if the world acts to slow climate change.