The LMB’s environmental conditions are regulated through the movement of air through the lab. Waste heat is recovered from the exhaust air before being routed to the top of the four plant towers and being discharged at high speed to prevent it being re-entrained back into the building. Of the four discharge exhausts shown in the picture only three are being used. The fourth is capped and available for expansion purposes. On day 214 of #LMB365 it seems as though the residual warmth from the exhausted air has attracted a local resident to trial some new accommodation at this precarious location. We wonder who it is?