This week’s DLTJ Thursday Threads is about data centers — those dark rooms with all of the blinking lights of computers doing our bidding. Data centers hit the mainstream news this week with the outage at one of Amazon’s cloud computing clusters. And since computers and their associated peripherals consume a lot of energy, researchers are proposing to run data centers on renewable energy. And finally Facebook and Google release separate videos that give glimpses into how large data centers are run.