William Nordhaus ‘63, Sterling Professor of Economics who won a Nobel Prize in 2018 for integrating climate change into long-run macroeconomic analysis, died Oct. 30 at age 85.

Some say the concept is complete fantasy, but a detailed analysis suggests that the falling cost of rocket launches might make it feasible in a few decades.

Company imitates reflection of sun from mirrors, prompting pushback from some scientists, environmentalists and California locals Locals in a rural area of California were recently startled to see dazzlingly bright light shining down from nearby mountains at night, illuminating a swathe of the desert below. Unbeknown to them, the strange nocturnal illumination was the latest step in a company’s plan to erect thousands of giant mirrors in space to reflect sunlight on to the Earth during night-time. Continue reading...