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A World Without Humans

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Anna Li, 7th Period A World Without Humans The Next Step in Evolution In the 21st century, the world without humans would be very hard to imagine. It’s one thing to just rewind time and go back to when people had not evolved yet (after all, if the entire geological history of earth was condensed into a calendar, humans have only been around on the last second of midnight). Right now, we’re in the Quaternary Period, the “Age of Man”. Go back a few more million years and you get to the Tertiary Pe
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  Anna Li, 7 th Period  A World Without Humans   The Next Step in Evolution In the 21 st  century, the world without humans would be very hard to imagine. It’s one thing to just rewind time and go back to when people had not  evolved yet (after all, if the entire geological history of earth was condensed into acalendar, humans have only been around on the last second of midnight). Right now, we’re in the Quaternary Period, the “Age of Man”. Go back a few more million years and you get to the Tertiary Period. To understand the future, we must first  understand the past, and so I’ll give a quick summary of what’s going on in the Tertiary Period. The Tertiary Period earned the nickname “Age of Mammals” because it was the time when mammals were taking over the land and replacing the reptiles. Thedominant predators were the saber-toothed tiger and mastodon (not really apredator, but still a dominant animal). Like the fall of great empires in the age of  man, usually a dominant species (like the dinosaurs) dies out or “falls” when another, more powerful species takes over (like the mammals).However, in this case, the humans would simply disappear off the face of theearth — currently, there is no species even close to dominating people (except maybethe man- eating lions in Africa), so the “one species falls when another dominates” theory likely wouldn ’t work. What I do know is this: Immediately after the downfall of mankind (perhaps a few weeks) our pets would die, and dog and cat species would quickly become extinct without human aid. I’m guessing that there would be  Anna Li, 7 th Perioda mini rewind of time as our buildings collapse and decay, and global warmingslowly cools down. The dominant predators of the earth would depend on the region, and each animal’s strengths and weaknesses; polar bears would dominate the arctic, as lions and tigers would dominate the safari. Everything would have tostabilize before any real developments can be made.Going back to our geologic time scale, if you did Fossils in Science Olympiadlike me you would know that there have been several periods in which a specificclass reins the land; first it was fish, then it was amphibians, then it was reptiles, and now it is mammals. Following the trend, I’d say birds haven’t had a good turn yet, so I predict that the next dominant creature would be the class Aves, birds.Long story short, birds will rule the world if humans disappear. Of allcreatures, they have been least affected by Global Warming and are still developingstrongly as a species. In addition, they haven’t been “top dog” of the world yet, so it’s about time that they have a turn . It’s been a few million years, why not switch it up?  
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