Tesla is racing to reliably build a more affordable electric car, but investment analysts are increasingly skeptical: “The car still does not exist."

(Mason Trinca / For The Washington Post)

Apple, Amazon, Facebook, Google and Microsoft spent a combined $64 million to shape U.S. regulation and stave off government scrutiny in 2018, according to ethics reports filed late Tuesday.

The CEO of Dell joins other business leaders in rejecting higher taxes for the super rich.

An ad-supported service could make Comcast's other businesses even bigger.

The hack may have been the result of a compromised password.

Twitter suspended one of the main accounts behind the viral video, raising more questions about the integrity of social media platforms.

Thousands of students at George Mason University can order food from on-demand robots on wheels. The school has received a fleet of 25 delivery robots from Starship Technologies that can haul up to 20 pounds and make deliveries in 15 minutes or less, the company says.

To clamp down on the spread of rumors, WhatsApp is restricting message forwards to five times for users after testing in India indicated it was effective.

Robomart has created an autonomous vehicle filled with fresh groceries that can be ordered using an app.

The penalty is expected to be much larger than the $22.5 million fine the agency imposed on Google in 2012.

The streaming service is ratcheting up its ambition, aiming beyond video.

Combining real-life anchors with vivid, digital simulations, the Weather Channel's mixed-immersive-reality clips have been pitched as an educational tool that brings extreme weather events to life. The latest previews an ice storm that is expected to strike the East Coast this weekend.

Airbnb refunded him after initially rejecting his claim that the host failed to disclose the use of two indoor cameras.

Our tech columnist sleeps on a $5,000 Sleep Number 360 smart bed and investigates other sleep tech that’s flooding the market. Does any of it work?

They go by the name “Marty.”

The social network said hundreds of pages had originated in Russia, including a network of accounts that touched on regional weather and sports but actually served as a way for Russian state-owned media to secretly reach social media users.

Over 130 Web security certificates belonging to federal agencies have now expired, making it harder to access online services, researchers say.

At the Masonic Cancer Clinic at the University of Minnesota, doctors have begun pairing a sensor with a common chemotherapy drug. The sensor transmits data from inside patients' bodies to doctors.

Burger King trolled the president's shutdown feast, and other brands have donated food to unpaid federal workers.

You might want to double-check your credit card statements.

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