Explore a conference talk from NDC TechTown that delves into the critical relationship between programming languages and energy consumption in modern computing. Learn how different programming languages like C++, C#, Rust, and Python impact both power consumption and runtime performance of applications. Discover practical insights into the growing energy demands of IT centers worldwide and their environmental implications, while understanding how language choice affects battery life in mobile devices. Through detailed analysis and studies, examine the two key components of energy consumption - runtime and power usage - across various programming languages, gaining valuable knowledge for developing more environmentally conscious and energy-efficient software solutions.