From Left to Right: Rohan Bhattarai, Bhakti Ahir Ahir, Ansh Tiwari. Credit: Lance Hayashida The ongoing effort to retrofit the crucial fume hoods in Caltech labs is already reaping money and energy savings. By Andrew Moseman The fume hood is one of those essential but sometimes invisible parts of life in the lab, a high-powered portal that sucks air away from a workstation so that any possible contaminant is whisked away from humans and blown out of the building. In other words, these hoods work