How China’s State-Sponsored Social Networks Control Misinformation—and Dissent

Misinformation takes on new meaning when the government decides what counts as truthState regulators around the world have responded to the proliferation of online rumors and propaganda on social media sites with a broad variety of actions. Australia, Brazil, and Indonesia have deployed government task forces and investigations, while Belarus,…

Self-Lubricating Linear Bearings Can Reduce Operating and Maintenance Costs

Recirculating ball linear bearing systems require periodic maintenance and lubrication to ensure they operate properly and do not cause damage to the ball bearings or guides. Figure 1. Linear bearings. Source: Igus Linear motion applications usually require bearings and guides that traditionally come in two basic cross-sectional configurations: rectangular or…

The Case Against Quantum Computing

The proposed strategy relies on manipulating with high precision an unimaginably huge number of variables   Illustration: Christian Gralingen Quantum computing is all the rage. It seems like hardly a day goes by without some news outlet describing the extraordinary things this technology promises. Most commentators forget, or just gloss over,…