The Download: record-breaking subsea tunnels and flexible data centers

Plus: SK Hynix has overtaken Samsung as South Korea's most valuable company. 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. 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 .