STEM in the Nation's Capital

Discover groundbreaking research, meet brilliant minds, and explore the innovations shaping our future—all through the lens of student journalists at the forefront of STEM.

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Latest from The Catalyst

Exploring groundbreaking research and the brilliant minds driving innovation in D.C. and beyond

Latest Stories

Explore profiles, features, and interviews from our contributors

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Features

In-depth explorations of groundbreaking research and innovations shaping our world.

Profiles

Meet the scientists and innovators driving discoveries in the D.C. area and beyond.

Interviews

Candid conversations with leading experts sharing their journeys and insights.

Editorials

Thoughtful perspectives and op-eds on pressing issues in science and society.

Challenge Yourself

The Catalyst Riddle

A new riddle of language and meaning — only the sharpest minds will unlock the Winners' Lounge

New Puzzle · Issue No. 02

Can you solve The Catalyst Riddle?

A four-line verse hides a single, ordinary answer in plain sight. Read carefully — the words themselves are the clue.

I am the beginning of eternity,
the end of time and space,
the beginning of every end,
and the end of every place.

What am I?

Accept the Challenge