1. Introduction: A fable of the first fire, brought by the water spider from a warm glowing Island to the cold dark world of animal-people -- 2. An exordium to the cultural delineation of spiders -- 3. Spiders: The 7th ranked species on planet Earth, coming from the mythological abode of seven earth (or seven heavens) -- 4. Spider life span: Web-weaving with a wispy thread of silk -- 5. The tangled equilibrium of predator and prey: The hunter becomes the hunted -- 6. Evolutionary and ecological impacts of stenophagy in Araneae: Its role in promoting or limiting spider diversity on planet Earth -- 7. A thumbnail preview of sensuous impression versus sensual expression of the spider -- 8. Untangling the mystery of the origin and evolution of spiders on the planet Earth -- 9. Evolutionary repertoire on silk spinning by spiders: Origin and microevolution of spinnerets and role of the spidroin gene family -- 10. Adaptation and evolutionary changes of spiders on planet Earth against the backdrop of geological time -- 11. Impact of environmental parameters on the biodiversity, web formation, and niche properties of spiders -- 12. Shifting of environmental factors related to ecophysiological and adaptive responses of spiders -- 13. Biomonitoring of environmental pollution using spiderwebs -- 14. Effect of climate change and natural disasters: Microevolution of spiders with aggressive behavioral traits.