“Forty tons may seem like a lot – it’s equivalent in weight to about 24 cars, or 6.5 fully grown elephants.”

“The total storage capacity of these two buildings together was more than 2500 cubic meters... How big is 2500 cubic meters?”

“They estimate the stock of empty houses nationwide at about 20 billion square feet, about two-and-a-half times the area of New York City.”