How does one learn about a new Lab exercise starting?

How does one learn about a new lab exercise starting? I practically missed the latest lab that ends 4/22. I checked blogs and the latest news and could find nothing suggesting that a new lab had started. The only reason I found it was, I kept seeing references, “having to work on the lab puzzles,” in the chat. It would be nice if new labs were posted in latest news since it is the most visible item for the players (and may be more than once).