A newborn who entered the world just last week has already etched his name in the record books.

Thaddeus Daniel Pierce, born on Saturday, July 26, in Ohio, has been dubbed the “world’s oldest baby” — and not because of how he looks or acts, but because of the incredible story behind his birth.

While it’s rare to make headlines the moment you’re born, this baby’s unique arrival has captured global attention. When he’s older, Thaddeus will be able to look back at the remarkable circumstances surrounding his birth.

So, How Can a Baby Be “Old”?

Thaddeus is the son of Lindsey (35) and Tim Pierce (34), who live in the United States. Speaking to MIT Technology Review, Lindsey shared how surreal the entire experience was for her family: “It was like something from a sci-fi movie,” she said.

“We didn’t go into it thinking we would break any records,” Lindsey added. “We just wanted to have a baby. We had a rough birth but we are both doing well now. He is so chill. We are in awe that we have this precious baby!”

If you’re confused about how a newborn can be considered old, you’re not alone. The explanation lies in modern reproductive technology.

Thaddeus was born from an embryo that had been frozen for more than three decades — a whopping 30 years — setting a new record for the longest-frozen embryo to result in a successful live birth. The embryo was transferred into Lindsey’s uterus in November 2024, and she gave birth this past weekend.

A 30-Year Journey From Embryo to Infant

The embryo came from Linda Archerd, 62, who created it with her then-husband in 1994 through IVF. Out of four embryos created, one became Linda’s daughter — who is now 30 — while the remaining three were stored.

After her divorce, Linda chose not to discard the embryos. Instead, she kept them in storage, paying thousands of dollars annually, in hopes they could one day help another family or be used for research.