Driving the Cloud to True Zero Carbon
February 2021 - Vol. 64 No. 2
![February 2021 CACM cover](https://cacm.acm.org/wp-content/uploads/2021/02/Feb-2021-Cover-500x669-1.jpg?w=500)
Features
Half-Baked High-Resolution Referencing
Issues Arise When Time Goes Digital
The State of Virtual Reality Hardware
Technological Responses to COVID-19
When Permissioned Blockchains Deliver More Decentralization Than Permissionless
CAPE: A Framework for Assessing Equity throughout the Computer Science Education Ecosystem
Cybersecurity: Is It Worse than We Think?
Polanyi’s Revenge and AI’s New Romance with Tacit Knowledge
Let’s Not Dumb Down the History of Computer Science
Differential Privacy: The Pursuit of Protections by Default
AZERTY amélioré: Computational Design on a National Scale
Keeping Science on Keel When Software Moves
A Review of the Semantic Web Field
DP-Cryptography: Marrying Differential Privacy and Cryptography in Emerging Applications
Technical Perspective: Programming Microfluidics to Execute Biological Protocols
BioScript: Programming Safe Chemistry on Laboratories-on-a-Chip
Technical Perspective: Solving the Signal Reconstruction Problem at Scale
Scalable Signal Reconstruction for a Broad Range of Applications
Bringing Stability to Wireless Connections