How were Easter Island’s giant stone heads made? New research challenges the idea that their construction led to environmental and social collapse – and uncovers surprising clues about the origins, innovations, and resilience of the Rapanui people.

A spectacular fossil graveyard reveals a 43-million-year-old whale that had four legs and could walk. Follow scientists as they search for new clues to how mammals moved from land into the sea to become the largest animals on Earth.

Join scientists on the biggest Arctic research expedition of all time. Facing hungry polar bears, perilous sea ice cracks, and brutal cold, the team strives to understand the forces that are changing the region—and the world—forever.

Many descendants of enslaved people have little record of their family's ancestry. Follow one family's quest to discover their lost history, and see how science and genealogy can help rebuild a family tree broken by slavery. Join filmmaker Byron Hurt at his extended family reunion as they celebrate the joy of family in the African diaspora and discover new details of their history.

Are scientists on the verge of a breakthrough in the fight against malaria, one of humanity’s oldest and most devastating plagues? Follow researchers as they develop and test a promising new vaccine on a quest to save millions of lives.

In just a few decades, China has transformed into a science and technology superpower. See inside leading Chinese tech companies and labs to discover how they innovate, what drives their rise, and what it means for the future of the global economy.

How did life survive on a planet covered in ice from pole to pole?

See how Earth transformed from a barren hellscape to a planet capable of sustaining life.

Thousands of engineers, technicians and workers race to build Europe’s biggest construction project–London’s new railroad, the Elizabeth Line.

Ancient footprints in New Mexico’s White Sands National Park reveal new evidence of Ice Age humans that walked the land alongside enormous ground sloths and mammoths—thousands of years earlier than archaeologists thought people were in the Americas.