Software Sucks, But It Doesn't Have To: How to make leaner, greener software

You can't see, hear, taste, feel, or smell it, but software is everywhere around us. It underpins modern civilization even while consuming more energy, wealth, and time than it needs to and burping out a significant amount of carbon dioxide into the atmosphere. The software industry and the code it ships need to be much more efficient in order to minimize the emissions attributable to programs running in data centers and over transmission networks. Two approaches to software development featured in this issue can help us get there.