The new-look popular science series kicks off with reports on a contraceptive pellet being used in the forests of Pennsylvania as a humane alternative to killing deer in order to control their numbers; an emergency system to prevent the pilots of light aircraft getting lost in the skies above Britain; and a breakthrough in the battle against dutch elm disease.
Presented by Carol Vorderman, with Howard Stableford, Rebecca Stephens, Shahnaz Pakravan and Monty Don.
See today's choices.
See This Week: page 9