Brett Westwood learns how fleas are entwined with disease, love, language and humour.
Could we, and should we, eradicate mosquitoes? Professor Adam Hart investigates.
Brett Westwood discovers how the fortunes of Britain's lampreys could be improving.
For Halloween, Miranda Krestovnikoff presents the blood sucking vampire finch.
Jheni Osman is on the front line against invading mosquitoes and new disease threats.