Urine (Definition) 1  Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs.
Photo by James Devaney/Wireimage/Getty Images. Though we like to think of ourselves as living in tolerant modern times, the news that Kate Winslet is having three children with three different fathers has been greeted with a pretty shocking level of judgmental outrage.
Kate, a mother for the second time in two years, looks lovingly at her new bundle of joy while Prince William puts a protective arm around her. Kate, 33, had a firm hold on her new daughter before taking her back to Kensington Palace for the night.