Washington, DC - NIST scientists have devised and improved a prototype instrument the size of a loaf of bread that can substantially increase the accuracy of length measurements in commerce. Perhaps surprisingly, it does so by achieving the most accurate measure of the refractive index of air reported to date.

Stanford, California - Many of the pressures that have put the world's animal life on the precipice of the sixth mass extinction are easy to spot: pollution, climate change, over-hunting, fractured habitats. Now research suggests one more potential factor: relative brain size.

Berkeley, California - Do politicians get more done if they are more prone to virtue or to vice, if they are inclined toward justice and humanity or to a self-serving social strategy?

Cambridge, Massachusetts - Autonomous robots performing a joint task send each other continual updates: “I’ve passed through a door and am turning 90 degrees right.” “After advancing 2 feet I’ve encountered a wall. I’m turning 90 degrees right.” “After advancing 4 feet I’ve encountered a wall.” And so on.

Washington, DC - The Federal Trade Commission has approved a modified final order settling charges that Mylan N.V.’s proposed hostile takeover of Perrigo Company plc would harm competition. Because Mylan failed to obtain the required threshold of Perrigo shares to succeed in its unsolicited offer, Mylan has abandoned the proposed acquisition.

Seattle, Washington - Benjamin Gardner is an associate professor in University of Washington Bothell’s School of Interdisciplinary Arts and Sciences and chair of the Henry M. Jackson School of International Studies’ African Studies Program. He answered a few questions about his book “Selling the Serengeti: The Cultural Politics of Safari Tourism,” published in February by University of Georgia Press.