‘Saildrone’ Footage Offers Rare Peek Inside a Category 4 Hurricane

The 23-foot crewless vessel pierced the eyewall of Hurricane Sam and captured stunning images as the storm barreled through the Atlantic Ocean.

Books That Cover Two Human Constants: Time and Motion

A review of Tom Standage’s “A Brief History of Motion” and David Rooney’s “About Time” delves into our concern with moving faster and checking our clocks.

Tesla Sells ‘Full Self-Driving,’ but What Is It Really?

As the company deals with government scrutiny of its driver-assistance technology, an add-on kit sold for up to $10,000 is also getting more attention.

‘It Happened So Fast’: Inside a Fatal Tesla Autopilot Accident

A 2019 crash in Florida highlights how gaps in Tesla’s driver-assistance system and distractions can have tragic consequences.

How Germany Hopes to Get the Edge in Driverless Technology

A new law allows autonomous vehicles in everyday use and provides legal consistency lacking in the United States.

Crashes involving Tesla Autopilot and other driver-assistance systems get new scrutiny.

Federal safety regulators told automakers to provide more information about accidents involving cars and trucks with automation technology.

Tesla Says Autopilot Makes Its Cars Safer. Crash Victims Say It Kills.

A California family that lost a 15-year-old boy when a Tesla hit its pickup truck is suing the company, claiming its Autopilot system was partly responsible.

What Is a Flying Car?

Inside Silicon Valley’s 10-year quest to make soaring above a crowded city street as easy as calling an Uber.

Why A.I. Should Be Afraid of Us

Because benevolent bots are suckers. Plus, racism in medical journals, the sperm-count “crisis” and more in the Friday edition of the Science Times newsletter.

When It’s OK to Be a Guinea Pig

It can be fun to try out new products, but only if we know what we’re signing up for.

The Costly Pursuit of Self-Driving Cars Continues On. And On. And On.

Many in Silicon Valley promised that self-driving cars would be a common sight by 2021. Now the industry is resetting expectations and settling in for years of more work.

The Costly Pursuit of Self-Driving Cars Continues On. And On. And On.

Many in Silicon Valley promised that self-driving cars would be a common sight by 2021. Now the industry is resetting expectations and settling in for years of more work.