Codecademy - Scope pollution II

// The first function redeclares (let) the air within
// the if-block -- a small example of scope pollution
// by re-using variable names

let logMyNightSky = () => {
  const planet = 'Venus';
  let air = 0;

  if(planet === 'Venus'){
    let air = 1;
    console.log(`Function 1:\nAir within if-block: ${air}`);
  }
  console.log(`Air outside of if-block: ${air}`)
}

// The second function overwrites the air within the
// function by not redeclaring it (no let), as a
// result the more wider scoped variable's value is
// overwritten

let logMyGround = () => {
  const soil = 'Clay';
  let air = 0;

  if(soil === 'Clay'){
    air = 1;
    console.log(`\nFunction 2:\nAir within if-block: ${air}`)
  }
  console.log(`Air outside of if-block: ${air}`);
}

/* Output =
Function 1:
Air within if-block: 1
Air outside of if-block: 0

Function 2:
Air within if-block: 1
Air outside of if-block: 1
*/
logMyNightSky();
logMyGround();