Long Form

A23a was once Earth's largest iceberg, measuring 1,540 square miles. Now, after moving north to the warmer waters of the South Atlantic Ocean, it likely has weeks before it ceases to exist.

By Rowland Manthorpe. In 1984, roughly one in six US workers were in clerical or secretarial roles—positions expected to be wiped out by the computer revolution. Reality was more nuanced and may have lessons for the era of AI.

In 1934, five identical babies born in Ontario, Canada, became the first quintuplets to survive infancy. The government took the girls within months, turning them into a tourist attraction and scarring them for life.

A look at the companies offering surrogacy to the ultrarich—including Chinese men taking their reproductive cues from Elon Musk.

How fermented foods shaped the immune system of humans and great apes over time, and why foods like sauerkraut may be important for the human body.

How does time flow? Is it even real? And can we time-travel? A physicist reveals the secrets of time—suggesting the past, present, and future might all be happening at once.

An illustrated deep dive shows how cheap drones are rewriting aerial warfare: Attacking is inexpensive, defending costs millions, and America's high-tech aircraft face a new imbalance in the skies.