The typography on Scalia Law School website has been swapped from Myriad Pro to Pelago. The primary reason is readability.
Myriad Pro is a classic workhorse typeface designed by Carol Twombly and Robert Slimbach. Pelago is a newer typeface designed by Robert Slimbach. Although Pelago has a much smaller family than Myriad Pro, its open counter makes better readability for online text. Its letterforms are less geometric and more natural for reading than Myriad Pro. Its numbers are also more legible.
We still keep Myriad Pro for big headlines, but the body text is Pelago. Because the typefaces are so similar, we made the swap without changing anything in the CSS. I am not sure if casual readers would notice the change, but it looks refreshing.