So in 1898, in a speech to the British Association, a chemist, Sir William Crookes, argued again that worldwide starvation was inevitable within a generation.
Finigan is ruled out of Sunday's game at Bramall Lane after picking up an injury from parent club Bradford and Crookes will undergo a fitness test on Friday night.
Michael Platt damaged his heel in the warm-up and was replaced by Jason Crookes, while scrum-half Matt Orford went off with a shoulder injury early in the second half.