Your lifespan expectancies for traditional structures of years is way off… traditional brick masonry in lime putty can last up to years, as well as old growth timber… we should be building with pre-oil technology at least for residential scale, until we develop a better system.
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You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Close Search. Then he fled the building. At 5pm the fifth floor ceiling began to sink. Shopping continued as usual, until the alarms were finally sounded nearly an hour later.
But it was too late. The Sampooning collapse is an example of how fragile modern engineering can be. Meanwhile the Egyptian Pyramids have been drawing crowds for millennia. Of these, the Great Pyramid of Giza — completed in BC — is unrivalled, with superior materials, engineering and design to any built before or since. Ancient Greek tourists would travel thousands of miles to gawk at its towering limestone steps, which were so highly polished they were said to glow; their names can be found carved into its walls to this day.
When the last mammoths died out, it was already 1, years old. It was the Burj of its day, towering above every other building until the spire of Lincoln Cathedral was completed around years ago.
The constructions must withstand immense forces just to stay upright, including regular lightning strikes and spiralling mile per hour winds — not to mention the constant effect of gravity. In some areas you can add major earthquakes to that list.
In fact, the impressive age of the pyramids is no accident. The ancient Egyptians believed the afterlife would last forever and took great pains to ensure their tombs would too.
Pyramid design evolved over thousands of years, as they experimented with the materials and architecture that would live up to their ambitions.
To make up for gaps in their understanding of the laws of physics, early pyramids were heavily over-engineered. They always added extra walls just in case. Another explanation is sheer size. Take the Great Pyramid. ASAP Science points out that it's even possible that escaped zoo animals could thrive in their new habitat.
Even if we suddenly disappeared, humans would leave behind some permanent traces. Electromagnetic radiation from our radios and phones will continue zipping their way through space.
Our mountains of trash would also linger. The chemicals in plastics and certain types of rubber can't be digested by bacteria and do not naturally break down. The plastics and rubber would eventually be swept into the oceans and settle in sediment layers.
After hundreds of millions of years they would integrate into rock layers and become part of the geological record. The natural carbon cycle would return atmospheric carbon dioxide levels to normal after a few thousand years, but radioactive material from sources like nuclear power plants would stick around much longer.
These lingering human traces would be puzzling to any aliens that stumble upon our planet, but the biggest mystery would be how we suddenly disappeared off the face of the Earth.
For you. World globe An icon of the world globe, indicating different international options. Which is to say that ultimately, despite climate extremes and the immense losses they can incur, "nature always finds a way," Weisman said. There might one day be a world without humans, but that won't stop the rest of the planet from soldiering on.
Is there any point in us pondering what our planet will look like, without us here? Well, on the one hand, we might simply take comfort in the knowledge that, free of people, our planet would ultimately be fine, as Weisman said. In fact, it would ultimately thrive. But taking a glimpse at this imagined future might also prompt us to be more mindful of our actions, in a bid to preserve our own spot on the planet, too.
Weisman sees an inherent value to visualizing a world without us, which is why he decided to write his book in the first place. He explained that when he started out, he was conscious that many people avoid environmental stories because it makes them feel bad about the damage that humans are doing to the planet, and how in turn, that's hastening our own demise.
With that distraction gone, he found, he could focus people's attention on the planet, and the real point he wanted to make: "I wanted people to see how beautifully nature could come back, and even heal a lot of the scars that we've placed on this planet. Then to think, is there possibly a way to add ourselves back into this picture of a restored Earth? Live Science. See all comments Very interesting observations.
But what I find most interesting is the perspective and the tone of the author, as well as the contributor, regarding the subject. First and foremost, the title is humorous because it implies that there is some scenario in which homo sapiens will NEVER go extinct. Our species, like millions before us, will certainly go extinct one day. The second item I find interesting is the way the author, like so many environmentally concerned thinkers, pit "Nature" against humans.
Does he mean to say humans are supernatural, and did not evolve as an intrinsic part of nature? I have no doubt that humans have been taking a larger and larger degree of control of our macroscopic environment for thousands of years, but I am just as certain that other species would and do fill any gaps immediately.
Humans have been winning the struggle for dominance only if you look at coral, rhinos, spotted owls, etc. Those horrible things that might happen if humans suddenly went away - should not concern us, because we will be gone! And if extra radiation lasts , years, that is the blink of an eye for mother Earth, and far less damage than would be caused by a major asteroid or megavolcano.
Many species - viruses, bacteria, fungi, insects - are doing fine and will do just fine with or without homo sapiens!
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