"Alien Empire" concludes with a look at how insects have spread and how humans have tried to combat that expansion. Included: crickets that have adapted to climatic extremes; the threat posed by gypsy-moth caterpillars.
Genres: Documentary , Family
Keywords: animal-kingdom , animal-species , animals , animals-nature , environmental , helping-animals , knowledge , love-of-animals , nature , nature-documentary , people-and-nature , wildlife , latest-episodes , latest-web-series-online , tv-shows-online