This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.
Inside the World's Deepest and Longest Subsea Road Tunnel
—Niall Firth
I’m currently around 1,000 feet beneath the North Sea, in a dark, dank cave. It smells weird. And I’m increasingly aware of the pressure from millions of tons of seawater just above my head.
I’m under the iconic fjords of Norway to visit what will soon become the world’s longest and deepest subsea road tunnel—an exceptional engineering feat that will carry drivers deep beneath the North Sea. As of 2026, the Rogfast tunnel is set to redefine subsea infrastructure, connecting coastal communities and slashing travel times.
I’m here to understand how you make a 16.6-mile highway that sits 1,280 feet below the sea at its deepest point. And also—at a time when it can feel hard to get anything done—to reassure myself that ambitious engineering is still possible. That we can still make things.
Step inside Norway’s Rogfast tunnel and see how engineers are making it happen.
This story is from the next edition of our magazine, which is all about engineering.
Flexible Data Centers and Market Shifts
In other tech news, SK Hynix has overtaken Samsung as South Korea’s most valuable company, driven by surging demand for high-bandwidth memory chips used in AI applications. Meanwhile, a new wave of flexible data centers is emerging, designed to adapt to fluctuating energy grids and edge computing needs. These modular facilities can be deployed rapidly in 2026, offering scalability and reducing carbon footprints—a critical step as global data traffic continues to soar.