Mythopoeia

Flora: Diverse plant life still flourish in certain parts of the world, but Green isn't a common color in the cities where most people find themselves. You have to be very wealthy to own a home with grass in front of it. Plants like Flowers are considered collector's items and require special care to grow due to the cities lack of natural sunlight. Other uses come in the form of Medicinal drugs and narcotics. Street gangs value science as much as privet companies and use it to create advanced strains of Legal and Illegal Drugs.

Fauna: The second greatest extinction-level event since the death of the dinosaurs took place in the early to mid 21st century, due to rapid climate change. With the help of private conservation groups, most wildlife was given a second chance through cloning. Nature Reserves all over the world act as large scale zoos where the animal population is highly regulated to maintain sustainable populations. As for domesticated animals, better initiatives were taken to maintain the population of cats and dogs, stray animals are a somewhat rare sight. It is also not uncommon to find wealthy individuals with exotic animals ranging from Snakes to Lions.

Conlang:  Coding language that was reserved for software engineers in the early part of the 21st Century is now common slang for most people. Learning the ins and out of software and hardware was necessary due to the sheer amount of technology a person would own. instead of relying on lazy customer service people can now take matters into their own hands and the sub-culture of tech-minded people grew exponentially.