What are you reading right now?

I read a manual on cottage layout and types of individual housing. Now I'm reading Larry Niven's "Ringworld," and I might write a review later because I like it, but I immediately want to note several ideas borrowed from this book.

• Ringworld - HALO, Stanford torus
• Space-warping engine - Star Trek
• Tiger-human race (Kzinti) - the world of TES (Khajiit)
• Combination of religious and secular power (Kzinti patriarch) - Warhammer 40k
• Superweapons that destroy planets - Star Wars
• Abolition of moral norms
• Physiological drugs that directly affect the pleasure center in the brain (stimulation with electricity)
• Extensive evolution of humanoid races, degrading to lower ecological niches
• Inter-species sex ritual
• Puppet race, controlling everything
• "No-time" capsule, static field
• Pre-nuclear transmutation of ore
• Network of teleporters
• Bioreactor, lol
• Economic systems of cities in a multi-species community
• Migratory fleet of planets
• Bacteria that eat superconductors
• And perhaps a quasi-Russian race that unscrewed the wheels from the Mars rover