Abstract. A ring R is called unit regular if for each element

a of R there exists a unit u such that aua = a. A ring

is called clean if any element can be written as the sum of a unit and an idempotent. In this talk I will present a proof by Victor Camillo and Dinesh Khurana that a ring is unit regular if and only if for any a in R there exist a unit u and an idempotent e in R such that a = e+u and aR ∩ eR = 0.