February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the solar system, as Pluto was long considered ...

Pluto's discovery by Clyde Tombaugh, key political changes in Scandinavia and America, plus cultural and scientific milestones.

Here’s a look back at what happened in the Chicago area on Jan. 23, according to the Tribune’s archives. Is an important event missing from this date? Email us. Front page flashback: Jan. 24, 1973 ...

On Jan. 29, 2026, a rare post-earnings tumble in Microsoft rattled tech stocks even as the Dow hovered near records. Stocks dipped sharply this morning as markets digested yesterday’s after-the-bell ...

Researchers use mini plasma explosions to encode the equivalent of two million books into a coaster-sized device. The method ...

The Maia 200 chip is starting to roll out to Microsoft’s data centers today. The Maia 200 chip is starting to roll out to Microsoft’s data centers today. is a senior editor and author of Notepad, who ...

An outage impacting Microsoft 365 users is "resolved" after thousands of users reported issues for several hours Thursday, Jan. 22. A few hundred are still reporting issues on Friday, Jan. 23.

Microsoft fell 11.7% despite beating estimates as Azure’s 39% growth disappointed expectations. Quarterly capex surged 65% to $37B, raising investor concerns about AI infrastructure returns. Nearly ...

Investors reacted in sharply different ways on Thursday to the latest quarterly results from Meta Platforms and Microsoft. The Facebook parent’s share price jumped 10%, mostly thanks to a very strong ...

More than 15,000 Microsoft 365 users weren't able to use basic functions Jan. 22 after the company suffered problems. The outage affected Outlook, Exchange and the M365 Admin Center. Here's what ...

Microsoft Azure grew 40% YoY to $30.9B with demand exceeding capacity and a $392B backlog. Palantir secured $2.76B in total contract value (up 151% YoY) driven by its AIP platform. Palantir gained 133 ...

AMD says it’s ready to support Microsoft launching its next Xbox as soon as next year. AMD says it’s ready to support Microsoft launching its next Xbox as soon as next year. is a senior editor and ...