The original version of this article, by Michael D. Lemonick, appeared on Climate Central.  In May, a team of British scientists abruptly canceled an experiment they had been planning for nearly two years. The Stratospheric Particle Experiment for Climate Engineering, or SPICE, was intended to test ways of injecting tiny particles of sulfur dioxide into the upper … Continue reading Geoengineering Faces Dilemma: Experiment or Not?