NotebookLM is getting in a few more features before the holidays, including an upgrade to Gemini 3 and Data Tables.

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.

Investors earn from bonds through interest payments, sale profits, or buying discounted bonds. Bonds vary by issuer and type, affecting safety, yield, and tax implications. Bonds provide stable income ...