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caleb scharf

The Worrisome Rise of NFTs

An astrobiologist says non-fungible tokens do not bode well for our species’s future.

January 12, 2022

Looking for Life on Mars

An astrobiologist and a director on the joys and challenges of filming space science.

September 28, 2021

What Is Life?

An astrobiologist finds the heart of his work in a new novel by Richard Powers.

September 15, 2021

Is the Universe Open-Ended?

An intriguing proposal about what makes reality tick under the surface.

June 16, 2021

My 3 Greatest Revelations

The author on writing his new book, “The Ascent of Information.”

June 16, 2021

A Wrinkle in Nature Could Lead to Alien Life

There may be more than one way to tune a universe for life.

April 21, 2021

The Alien-Haunted World

Are space scientists too conservative and close-minded about the possibility that ET exists?

February 14, 2021

Who Said Nobody Read Isaac Newton?

It’s a myth that legendary works in science aren’t read.

January 20, 2021

We Never Know Exactly Where We’re Going in Outer Space

Adventures in space travel remind us how imprecisely we measure reality.

November 4, 2020

Take Our Virtual Trip to Mars

See where NASA’s Mars 2020 mission will go and what it may find.

September 1, 2020