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How Many Millions of Lines of Code Does It Take?

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How Many Millions of Lines of Code Does It Take?

How Many Millions of Lines of Code Does It Take?

Today’s data visualization comes from David McCandless from Information is Beautiful. Buy their awesome book called Knowledge is Beautiful – we own the physical version, and it’s full of great data visualizations.

How many millions of lines of code does it take to make the modern program, web service, car, or airplane possible?

The range is extraordinary: the average iPhone app has less than 50,000 lines of code, while Google’s entire code base is two billion lines for all services. And interestingly, the code behind machines such as fighter jets, popular video game engines, and even the Large Hadron Collider fall somewhere in between these two extremes.

Increasing Complexity

A million lines of code, if printed, would be about 18,000 pages of text. That’s 14x the length of War and Peace.

It’s more than what was needed to run old technologies like the Space Shuttle, a pacemaker, or even the game engine of Quake 3 – but it’s not enough to be the driving force behind the modern software that’s used in everyday life today.

  • The control software to run a U.S. military drone uses 3.5 million lines of code.
  • A Boeing 787 has 6.5 million lines behind its avionics and online support systems.
  • Google Chrome (browser) runs on 6.7 million lines of code (upper estimate).
  • A Chevy Volt uses 10 million lines.
  • The Android operating system runs on 12-15 million lines.
  • The Large Hadron Collider uses 50 million lines.
  • Not including backend code, Facebook runs on 62 million lines of code.
  • With the advent of sophisticated, cloud-connected infotainment systems, the car software in a modern vehicle apparently uses 100 million lines of code. This is according to Wired magazine.
  • All Google services combine for a whopping 2 billion lines.

Applying the math above – that means it would take 36,000,000 pages to “print out” all of the code behind all Google services. That would be a stack of paper 2.2 mi (3.6 km) high!

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Explainer: How Synthetic Biology is Redesigning Life

Synthetic biology (SynBio) is a field of science that involves engineering life for human benefit. Here’s an in-depth look at how it works.

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Synthetic Biology

Explainer: How Synthetic Biology is Redesigning Life

Synthetic biology (SynBio) is a field of science that involves engineering life for human benefit. It has the potential to reshape many facets of society—from the ways we produce food, to how we detect and cure diseases.

It’s a fast-growing field of science. In fact, by 2026, the SynBio market’s global revenue is expected to reach $34.5 billion, at a CAGR of 21.9%.

While this fascinating area of research is worth paying attention to, it might be daunting to wrap your head around—especially if you don’t come from a scientific background. With this in mind, here’s an introduction to synthetic biology, and how it works.

What is Synthetic Biology?

As we touched on in the introduction, SynBio is an area of scientific research that involves editing and redesigning the biological components, systems, and interactions that make up life. By doing this, SynBio can grant organisms new abilities that are beneficial to humans.

It’s similar to genetic engineering, however, it’s slightly more granular. While genetic engineering transfers ready-made genetic material between organisms, SynBio builds new genetic material from scratch.

SynBio has applications across a myriad of fields, with research covering everything from space exploration to drug discovery. Here’s a look at five of its real-world applications:

1. Medical Technologies

SynBio has a wide range of medical applications, including drug discovery, antibody production, and vaccine innovation (it’s been key in the fight against COVID-19). It also plays a significant role in “living drug” development, which is the use of living microbes to treat chronic or severe illnesses.

2. Sustainable Energies

Biofuel, which is renewable energy that’s derived from living matter, could replace petroleum and diesel in the near future—and synthetic biology technology is helping develop fermentation processes that will produce biofuel more efficiently.

3. Bioremediation

Bioremediation uses living organisms to restore polluted sites to their original condition. This field uses SynBio to try and make the decontamination process more efficient, and to expand the list of contaminants that bioremediation can target.

4. Food and Agriculture

SynBio plays a significant role in cellular agriculture, which is the production of agricultural products directly from cells rather than livestock or plants. These modified foods might have higher nutritional value, or might be void of allergens. For instance, this can be used to make plant-based burgers taste more like meat.

5. Space Systems and Exploration

Synthetic biology and 3-D printing have huge potential to sustain life during space exploration. Using SynBio technology, cells and bacteria could be modified to produce a myriad of materials—from plastic to medicine, and even food—and astronauts could print these synthetically engineered materials on-demand while in space.

Zooming in: the Science Behind Synthetic Biology

Now that we’ve touched on SynBio’s use in a wide range of industries, let’s dive into the science behind it. In order to understand the mechanics of SynBio, it’s important to explore the relationship between DNA and protein production.

Proteins are the drivers of life in a cell—they’re responsible for carrying out all of life’s functions. They are created through a process called protein synthesis, which relies heavily on DNA. Why is DNA so important in protein production? Because it houses all the information a cell needs for protein synthesis.

Once a protein is formed, it embarks on a complex journey throughout the cell, interacting with a number of other proteins and cellular components to perform functions needed for the cell’s survival.

This process of protein production and cellular interaction is an example of a biological system. And it’s this biological system that synthetic biologists investigate, and try to manipulate.

The Five Main Areas of Research

After combing through the literature, we identified five major areas of SynBio research:

  • In silico Synthetic Biology
    Meaning “via computer”, this area of SynBio research uses computational simulations to design and predict new biological systems. It’s like using a drawing board before starting a project.
  • “Unnatural” Molecular Biology
    An area of research focused on altering the smallest unit of DNA—nucleotides.
  • Bioengineering
    This area of research deals with larger segments of DNA like genes or chromosomes, and sometimes other cell components that interact with DNA. It aims to create new proteins or protein systems and is the most popular area of SynBio research.
  • Synthetic Genomics
    Focused on altering and manipulating whole genomes (which is the complete set of a cell’s DNA).
  • Protocell Synthetic Biology
    This field of research aims to construct whole cells. This is a step towards creating organisms that are entirely synthetic

While early research in SynBio struggled to finish real-world projects, innovation in this field has ramped up quickly in the last decade.

Synthetic biology products are becoming increasingly more pervasive in everyday life—so much so that by 2030, some scientists believe most people will have eaten, worn, or used something created through synthetic biology.

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The World’s Top 50 Influencers Across Social Media Platforms

Which influencers have the most total social media followers? We tally up follower counts across all major platforms, from Twitter to TikTok.

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Most-followed social media influencers across Twitter, Instagram, Facebook, YouTube, TikTok, Twitch

Visualizing the World’s Top 50 Influencers

In the modern digital world, social media reach is power.

The people with the most followers on Twitter, for example, have a massive platform to spread their messages, while those with large, engaged followings on Instagram are an advertiser’s dream sponsor partner.

Social media can also be an equalizer of power. It’s true that many celebrities boast large followings across platforms, but social media has also enabled previously unknown personalities to turn YouTube or TikTok fame into veritable star power and influence.

Who has the biggest reach across the entire social media universe? Instead of looking at who has the most followers on Instagram, Twitter, or other networks, we ranked the most-followed personalities across all major platforms combined.

Who Has the Most Overall Followers on Social Media?

We parsed through hundreds of the most-followed accounts on multiple platforms to narrow down the top influencers across social media as of April 2021.

Sources include trackers of the most followers on Twitter, Instagram, Facebook, YouTube, Twitch, and TikTok, verified directly on site and with social media tracker Socialblade.

The results? A top 50 list of social media influencers consisting of athletes, musicians, politicians, and other personalities.

RankNameCategoryTotal FollowersBiggest Platform
#1Cristiano RonaldoSports517MInstagram
#2Justin BieberMusic455MInstagram
#3Ariana GrandeMusic429MInstagram
#4Selena GomezMusic425MInstagram
#5Taylor SwiftMusic361MInstagram
#6Dwayne JohnsonFilm & TV342MInstagram
#7Katy PerryMusic338MInstagram
#8Kylie JennerOther333MInstagram
#9RihannaMusic332MTwitter
#10Kim KardashianOther319MInstagram
#11Lionel MessiSports298MInstagram
#12NeymarSports283MInstagram
#13ShakiraMusic282MFacebook
#14Jennifer LopezMusic277MInstagram
#15BeyoncéMusic267MInstagram
#16Ellen DeGeneresFilm & TV260MInstagram
#17Miley CyrusMusic235MInstagram
#18Nicki MinajMusic232MInstagram
#19Barack ObamaPolitics221MTwitter
#20Will SmithFilm & TV217MFacebook
#21Kendall JennerOther212MInstagram
#22Demi LovatoMusic211MInstagram
#23Lady GagaMusic210MTwitter
#24Kevin HartFilm & TV201MInstagram
#25Virat KohliSports195MInstagram
#26EminemMusic194MFacebook
#27DrakeMusic192MInstagram
#28Khloé KardashianOther191MInstagram
#29Bruno MarsMusic191MFacebook
#30Chris BrownMusic187MInstagram
#31Vin DieselFilm & TV177MFacebook
#32Narendra ModiPolitics175MTwitter
#33Justin TimberlakeMusic175MTwitter
#34Billie EilishMusic171MInstagram
#35Charli D'AmelioOther169MTikTok
#36Kourtney KardashianOther165MInstagram
#37Cardi BMusic160MInstagram
#38LeBron JamesSports157MInstagram
#39AdeleMusic156MFacebook
#40Priyanka ChopraFilm & TV144MInstagram
#41Germán GarmendiaGaming143MYoutube
#42Wiz KhalifaMusic142MFacebook
#43Felix "PewDiePie" KjellbergGaming141MYoutube
#44Akshay KumarFilm & TV140MInstagram
#45Snoop DoggMusic138MInstagram
#46Deepika PadukoneFilm & TV138MInstagram
#47Britney SpearsMusic137MTwitter
#48Shawn MendesMusic136MInstagram
#49Whindersson Nunes BatistaOther135MInstagram
#50Salman KhanFilm & TV134MFacebook

Unsurprisingly, celebrities reign supreme on social media. As of April 2021, soccer superstar Cristiano Ronaldo was the most-followed person on social media with more than 500 million total followers.

But there are other illuminating highlights, such as the global reach of music. With large and diverse fanbases, artists account for half of the top 50 largest social media followings.

Also notable is the power of Instagram, which was the biggest platform for 67% of the top 50 social media influencers. This includes hard-to-categorize celebrities like the Kardashians and Jenners, which turned reality TV and social media fame into business and media empires.

Download the Generational Power Report (.pdf)

The Generational Power Index

The Most Followers on Twitter, TikTok, and YouTube

However, it’s not only celebrities that dominate social media.

Personalities that started on one social media platform and developed massive followings include TikTok’s most-followed star Charli D’Amelio and YouTubers Germán Garmendia, Felix “PewDiePie” Kjellberg, and Whindersson Nunes Batista.

Politicians were also prominent influencers. Former U.S. President Barack Obama has the most followers on Twitter, and India’s Prime Minister Narendra Modi has more than 175 million followers across social media.

Former U.S. President Donald Trump would have also made the list with more than 140 million followers across social media before being banned from multiple platforms on January 8, 2021.

A Generational Look at Social Media Influence

While older generations have had to adapt to social media platforms, younger generations have grown up alongside them. As a measure of cultural importance, this gives Gen X, Millennials, and Gen Z a rare leg-up on older generations.

Millennials, in particular, hold the lion’s share of spots in this top 50 list:

Generation# of Influencers in GenerationTop Influencer in Generation
Gen Z4Kylie Jenner
Millennial33Cristiano Ronaldo
Gen X10Dwayne (The Rock) Johnson
Baby Boomer3Ellen DeGeneres

The average age of the top 50 influencers was just over 37.

In our Generational Power Index (GPI), which measures the share of power generations hold in various categories, digital platforms were a key area where Millennials derived their power and influence. Overall, Baby Boomers—and to a lesser extent, Gen X—still run the show in most areas of society today.

Social Media Influence, Going Forward

As most fans and advertisers know, not all social media accounts and followings are homogenous.

Many influencers with relatively small followings have more consistent engagement, and are often able to demand high advertising fees as a result.

Conversely, most social media platforms are reckoning with a severe glut of fake accounts or bots that inflate follower counts, impacting everything from celebrities and politicians to personalities and businesses.

Regardless, social media has become a mainstay platform (or soapbox) for today’s cultural influencers. Billions of people turn to social media for news, engagement, recommendations, and entertainment, and new platforms are always on the rise.

Editor’s Note: An earlier version of the data used for this story incorrectly counted Facebook likes instead of followers for some personalities. The content has since been corrected and updated.”

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