True or False?

Hoover Dam was made with massive amounts of concrete (enough to build 3000 miles of road). In order to cool this concrete, a supersized fridge was invented. This machine dispensed up to a thousand tons of ice every day! The incredible refrigeration machine helped take off decades from the project’s timeline.

If you like fish, think about this! Farm-raised salmon is usually white, so salmon farmers add carotenoids, a type of plant pigment, to the fish feed to produce the natural pink color that wild salmon exhibit.

Microsoft’s anechoic chamber in Washington, USA, is the quietest place on earth. Large foam wedges cover the surfaces, muffling all the reflections from the floor, walls, or ceiling. The room has a negative decibel rating at -20.6 decibels.