It seems odd that such a highly developed civilization has not yet found a way to combat parasites. These pesky creatures build huge hives or nests which often block or slow down the orderly progress of the earthling. However, the earthling seems to have this matter in hand. The eradication of these pests is obviously a top priority job for the working class.
Kaj Pindal & Les Drew’s awesome animated short What On Earth! – now available on YouTube.