Energy consumption by computers is expanding exponentially along with big data and AI processing. The trend can be broken by adopting alternate approaches to CPU and GPU design. Specifically, Adiabatic Reversible Logic (ARL) has been proposed as the solution. This essay surveys the technology of ARL and gives early examples of actual reversible machines.

Each "Communication Corner" essay is self-contained; however, they build on each other. For best results, before reading this essay and doing the exercise, go to the first essay "How an Ugly Duckling Became a Swan," then read each succeeding essay.

Learn how to use body language when delivering a speech or presentation. This installment of Communication Corner presents the practical aspects of body language such as eye contact, gestures, and vocal intonation to name a few.