This issue covers:

• The hottest and coolest - A few key locations are defining the cooling market, and how it evolves.
• The great refrigerant shortage - New EU regulations are putting the squeeze on data center refrigerants. Take note.
• Getting into hot water - An energy efficient supercomputer could hold the key to the future.
• At the edge, liquid cooling returns - As the edge is built out, we may have to revisit old ideas, creating something new.