• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place

2

MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

3

Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster

1

Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place

2

MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

3

Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster
LeadershipBill Gates

This is what keeps Bill Gates up at night

By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
May 28, 2015, 9:54 AM ET
Bill Gates speaks at TED2015 - Truth and Dare, TED University, March 16-20, 2015, Vancouver Convention Center, Vancouver, Canada. Photo: Bret Hartman/TED
Bill Gates speaks at TED2015 - Truth and Dare, TED University, March 16-20, 2015, Vancouver Convention Center, Vancouver, Canada. Photo: Bret Hartman/TEDBret Hartman/TED
Add Fortune on Google for similar content.

Bill Gates is the richest man in the world. He essentially invented personal computing and co-founded a major multinational corporation. But what really keeps him up at night has nothing to do with technology–it’s about humanity.

“I rate the chance of a nuclear war within my lifetime as being fairly low,” Gates told Vox’s Ezra Klein. “I rate the chance of a widespread epidemic, far worse than Ebola, in my lifetime, as well over 50%.”

Gates, who is 59 years old, referenced a death chart that shows the rise and fall in number of deaths throughout the 20th century. There was a spike during World War I, about 25 million, and another for World War II, about 65 million. In the middle of those two eras, you’ll see a spike that’s almost as large as World War II.

“Well, that was the Spanish flu,” said Gates.

The 1918-1919 Spanish flu pandemic killed somewhere between 30 and 50 million people, according to recent estimates. Given the delayed global reaction to the Ebola crisis in Africa, Gates fears that we are not ready to effectively battle a wide-reaching epidemic.

Controlling the spread of a virulent disease is even more complicated today, given that 50 times more people cross borders now than they did in 1918, according to Gates’ modeling. Using an algorithmic model, Gates estimates that a Spanish flu-like disease could kill 33 million people in 250 days.

“Within 60 days it’s basically in all urban centers around the entire globe,” Gates said. “We’ve created, in terms of spread, the most dangerous environment that we’ve ever had in the history of mankind.”

About the Author
By Laura Lorenzetti
See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Leadership

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Leadership

Nike’s earning numbers exceeded Wall Street’s expectations. But CEO Elliott Hill’s next test is the World Cup
RetailNike
Nike’s earning numbers exceeded Wall Street’s expectations. But CEO Elliott Hill’s next test is the World Cup
By Mia OsmonbekovJune 30, 2026
2 hours ago
Young worker at desk
SuccessGen Z
Remote-first fintech giant Revolut is making the office compulsory for new Gen Z grads—and they’ll earn flexibility like their peers after one year
By Emma BurleighJune 30, 2026
7 hours ago
Henry Kravis
SuccessCareers
KKR cofounder once impressed Roy Disney with a habit most analysts skipped—it turned a 1-hour meeting into all-day mentorship: ‘I thought I’d died and gone to heaven’
By Preston ForeJune 30, 2026
8 hours ago
Bill Gates (left) and Warren Buffett
SuccessWarren Buffett
Warren Buffett breaks from a ‘lifetime’ pledge to the Gates Foundation as the Epstein fallout deepens
By Sydney LakeJune 30, 2026
8 hours ago
kean
PoliticsElections
New Jersey Republican to reappear in Congress after unexplained 4-month absence
By Mike Catalini and The Associated PressJune 30, 2026
10 hours ago
swiss
EuropeHeat
It’s so hot in Switzerland that yodelers are standing in fountains
By Jez Fielder and The Associated PressJune 30, 2026
10 hours ago

Most Popular

Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
Success
Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
By Sydney LakeJune 29, 2026
1 day ago
MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year
Success
MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year
By Sydney LakeJune 25, 2026
6 days ago
Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster
Success
Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster
By Preston ForeJune 27, 2026
4 days ago
'Humanity has chosen to become idiots': This Brown professor switched to take-home exams after a mass shooting and discovered mass cheating
AI
'Humanity has chosen to become idiots': This Brown professor switched to take-home exams after a mass shooting and discovered mass cheating
By Catherina GioinoJune 29, 2026
1 day ago
The retired college professor fighting a $313 trespassing ticket in Wisconsin thinks he's part of a national struggle
Environment
The retired college professor fighting a $313 trespassing ticket in Wisconsin thinks he's part of a national struggle
By Catherina GioinoJune 28, 2026
3 days ago
Current price of oil as of June 29, 2026
Personal Finance
Current price of oil as of June 29, 2026
By Joseph HostetlerJune 29, 2026
1 day ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.