fun facts

Is the world really running out of sand?

Is the world really running out of sand? Despite alarming headlines, “the world is not running out of sand,” says Grady of Practical Engineering. The real issue lies in using specific types for construction, as certain sands are easier to […]

staying thirsty

Why is desalination so difficult?

“An overview of seawater desalination: removing salt to make drinkable water from the ocean.” This is a great video from the YouTube channel Practical Engineering. ~ learn more