This is sad.

From NYTimes.com: Future of Giant Turtle Still Uncertain

Scientists trying to save one of the world’s most endangered species of freshwater turtles say waiting is their only recourse after a complicated attempt to mate two elderly turtles during this year’s breeding season ended without producing any offspring.
…
It was a meeting that carried some risk; males can be territorial and have been known to attack other, unfamiliar, turtles. Nor had either turtle seen a member of the opposite sex in decades. But scientists say the pairing was a success.

Unfortunately, the pairing failed to produce any offspring.  It could have been the poor diet of the female turtle or the fact that the turtles are old.  It’s sad that these two elderly turtles may be the very last of their kind.