A digital model simulated city appears in a screenshot with a toolbar at left

Chicago-based start up wants to make a digital clone of a city

In Jorge Luis Borges’s 1946 one-paragraph short story “On Exactitude in Science,” a fictional 17th-century individual, Suarez Miranda, tells of a time that the “Cartographers Guilds” made a map of their empire so accurately that it matched it entirely, at 1:1 scale, point by point. Of course, this map was utterly useless. This meditation on

This gravity-powered battery could be the future of energy storage

Over the last decade, the renewable energy industry has boomed due to the proliferation of new technology that is reducing the cost of construction and long-term operability. However, one critical problem still remains: storing renewable energy during lulls in wind speed or sun exposure is often prohibitively expensive. In response to this issue, Energy Vault, a subsidiary of California’s IdeaLab,