Researchers at the University of Cambridge have shattered the myth that Americanese has taken an unshakeable hold on the Anglophone world.

And the proliferation, clonability, migration, invasion and cell cycle of ovarian cancer cells are significantly correlated with the expression of clusterin.

"Yeh know Tom Jamison, he lives next door t' me up home.

Given an integer X written in base 10 (as is usual), compute the sum of the digits of X: call the result the digit sum of X. If the digit sum is greater than 9, we form the digit sum again. Continue in this way to obtain the iterated digit sum which is at most 9.