timef 12/15/2025

The data centers used for work on artificial intelligence can cost tens of billions to build. Tech giants are finding ways to avoid being on the hook for some of those costs.

Lightspeed Venture Partners, a Silicon Valley venture firm, has amassed more than $9 billion to invest in artificial intelligence. That is its biggest haul.

Elon Musk’s rocket and satellite giant is already planning a stock sale at an $800 billion valuation. Going public could put it in the trillion-dollar club.

Founded in 1990 by three M.I.T. researchers, iRobot introduced its vacuum in 2002. Its restructuring will turn the company over to its largest creditor.

From Colorado Springs to Vienna, here’s where you can indulge in a festive winter break.

Advocates fear damage to labor protections if the Supreme Court upholds the president’s move to control federal agency staffing.

Medetomidine, a veterinary sedative mixed into fentanyl, has sent thousands to hospitals, not only for overdose but for life-threatening withdrawal. It is spreading to other cities.

Sometimes, a short-term rental doesn’t live up to its billing. Here’s how to recognize red flags before you turn up at the front door.

Naples, Fla., and Milwaukee are quite different, but have one thing in common: They are home to regional theaters that are thriving.

A broad measure of investment fell more than 10 percent in November, continuing a recent reversal and signaling the depth of China’s property crisis.