A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.

The top video conferencing services we've tested help you stay connected and communicate with clients, team members, and anyone else, no matter where you are. I’ve been writing about consumer ...

Index funds track market indexes, automating investments and saving on fees. Vanguard offers low-cost index funds that cover various sectors and global stocks. Investors can start with ETFs or mutual ...

Your PC’s storage media is subject to malware and, on occasion, natural disasters such as lightning, fire, etc. — which is why formulating a backup strategy is critical for keeping your data safe. Our ...

A modern website for Divinci.ai featuring interactive elements, animations, multilingual support, and comprehensive testing. Static HTML website designed for Cloudflare Pages. divinci.ai/ ├── assets/ ...