Link About It: This Week’s Picks

Emissions-free cement, a women-only spacewalk, Soviet-era train stations, a very rare diamond and more from around the web

Google Maps Adds Vocal Guidance for Visually Impaired Users Now available on Google Maps iOS and Android apps (one day after World Sight Day), a more detailed voice feature will update and guide visually impaired people more effectively. To turn on the feature, access the settings page within the app and toggle through the navigation features and turn on detailed voice guidance under the walking …

Christopher Herwig’s Photographs of Soviet Train Stations

From Kyivska’s Kharkiv Metro to Moscow’s Tulskaya stop, Christopher Herwig photographs Soviet-era train stations all over Ukraine, Russia, Georgia and beyond. The project (and now book) follows his previous endeavor photographing bus stations, and the result is quite stunning. Whether featuring opulent chandeliers and luxurious marble or mosaics celebrating hard work, each subterranean scene is a peek behind what was the Iron Curtain. See more …

First-Ever Diamond Within a Diamond Found in Russia

Fittingly dubbed the “Russian Nesting Doll Diamond,” this tabular-shaped diamond within a diamond was found in the Nyurba mine in Yakutia, Russia. Perhaps the world’s first-ever instance of such a gem, an outer diamond (.62 carats) holds a smaller one (.02) carats within, but the two differ enough so that the smaller rock rattles around inside. Because this is such a rare occurrence, researchers have yet …