Fifteen years later, volunteers from the 9/11 Tribute Center describe how the events of September 11, 2001 changed their lives.

Frederikskirken, København (photo: Orf3us/Public Domain/Wikimedia Commons) Irenaeus is a powerful aide and inspiration to us ...

Refuges Left on a Frozen EarthFrom about 2.4 billion to 2.2 billion years ago, large-scale glacial activity occurred ...

Artist Irma Sofia Poeter presents the dress as a place ‘where personal expression meets structures of power’ in new ...

The Mars we know today is a cold, dry world of dust and rocks. However, around 3.8–3.6 billion years ago, it may have looked ...

Former UCSF Chancellor and Nobel laureate J. Michael Bishop, MD, who passed away this year, helped transform modern cancer ...

But the Z machine is crucial for Clark’s work. She suggests that during the early, chaotic days of Earth’s formation, melted ...

Ribose molecules came to Earth in meteorites and eventually became key parts of RNA. But how they survived in between has ...

By simulating a billion years of Earth’s history, researchers have identified a possible window for life’s earliest chemistry ...

Though she was married to one of the defining names in modern blockbusters, Melissa Mathison's screenwriting genius and ...

Scientists studying ancient Australian rocks uncovered more than 12,000 fossils from some of the oldest known eukaryotes on Earth. These early complex cells lived in settings ranging from coastal ...

The director of the ATF said its inspectors would not consider suppressor transfers on a 4473 to be a violation, and promised ...