In this century, we never cease to be surprised by so many technological inventions that have marked a milestone in scientific history. Let's take a look at some of them and who created them.

In ancient times, every time a great engineer or scientist surprised the world, it was an impressive event that often had the capacity to drastically change lives. Nowadays, however, technological inventions are constantly being renewed and evolving at an impressive speed. For this reason, it is a little more difficult for there to be an invention that changes the world in the same proportion or makes a strong impression on society.

However, that doesn't mean that scientists don't continue to surprise us, and the 21st century has brought us some of the most revolutionary technological inventions in history. Do you want to know what they are? Let's find out!

1. YouTube Although YouTube is a virtual platform and you might not see it as an invention, the reality is quite the opposite.

During its beginnings, YouTube was a very different site from what we know today, and one of the most important reasons is the fact that in 2006 the average Internet connection speed was barely fast enough to play videos in medium quality.

The story of its creation is quite interesting and inspiring. Its creators, Chad Hurley, Steve Chen and Jawed Karim, were former PayPal employees who one day decided they wanted to start a project of their own.

Eventually, after its launch in early 2005, a new era of entertainment was in the making, as after a few years, Google saw the potential of the platform and decided to buy it at an exorbitant price of $1.65 billion.

Today, YouTube is almost as popular as cable television and, in addition to developers, thousands of people earn a steady monthly income thanks to the YouTube Partner project, which awards commissions for advertising on videos, giving individuals and companies an incentive to create specialised content for the platform. cool inventions

1. Artificial heart In recent decades, medicine has been one of the most advanced sciences, and engineering has also long been a part of this growth. For example, organ transplants have been a reality for quite a few decades, but they still have the problem that they need to find a donor first and, when it comes to a vital organ, it must be someone who has already passed away.

But, although it sounds like a science fiction movie, engineers have managed to build artificial hearts using 3D printers. This is something that completely changes the boundaries of medicine as we know it, and may lead us to find new alternatives to diseases that plague humanity. How exciting!

1. Facebook Created by Mark Zuckerberg between 2003 and 2004, this platform was only a school project aimed at maintaining communication between students at Harvard, the school where the creator was studying.

However, over time, Facebook, which was a service exclusively for Harvard students, became a service aimed at different schools and finally ended up being a social platform for use by the general public.

Today, Facebook is the world's largest social network, with a presence in virtually every country in the world and translated into more than 200 languages.

1. Virtual reality video games While Nintendo's Virtual Boy was the first video game that was designed to be played through a viewfinder, we can now find much more impressive things that offer players immersive and impressive experiences that are interactive and react to head and limb movement.

This time, the invention is under Sony's tutelage. With its PlayStation 4 and under the direction of Shuhei Yoshida, it launched in 2015, a viewer, called PlayStation VR, which was compatible with some games in order to convey the virtual reality experience.

It may not have been the first console or the first project of this style, but it is definitely the most serious and successful proposal so far, and it will surely be the forerunner of what the video game market will be like in the years and decades to come.

It is worth mentioning that other companies, such as Google, also have attractive projects such as the Oculus Rift, and there are rumours that the Nintendo Switch will also have an update to have a presence in this style of software.

1. Self-driving cars While the existence of vehicles that don't require a driver isn't entirely new, a lot of progress has been made in this particular field over the last decade.

The idea of living in a world where cars drive themselves seems like something out of "The Jetsons" or a work of science fiction. However, the company Google, since the end of the last decade, already has some prototypes that suggest that it won't be long before this becomes a reality.