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uracil

Bennu_mosaic_OSIRIS-REx_(square)
Photo: Bennu, via Wikimedia Commons.

Could This Be the Year’s Most Ridiculous Idea About How Life Originated?

Stories like this always want to tell us how Earth and life are not “special.” It’s an obsession with science writers, and seemingly with the folks at NASA too. Read More ›
RNA_Isolation_by_Trizol_Method
Photo: A sample of RNA, by Ajay Kumar Chaurasiya, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons.

RNA as Cells’ “Text Messaging” System

Some researchers wonder if RNA can be understood as a common language that can be read among cells of widely different life forms. Read More ›
sunlight
Photo credit: Thomas Kinto via Unsplash.

Sunlight on the Puzzle of Prebiotic RNA?

In two previous articles, I have argued against the plausibility of generating biologically relevant polymers (proteins, RNA, and DNA) in a prebiotic world. Read More ›
Ryugu
Photo: Asteroid Ryugu, by Stuart Rankin, via Flickr (cropped).

Uracil Discovered on Asteroid Ryugu — What Does It Mean for the Origin of Life?

These Ryugu samples appear to be our first chance to examine which organic compounds may be produced in a prebiotic setting in our solar system. Read More ›
RNA-molecules-1024x538

In New Research, RNA Takes Center Stage

DNA has long been considered the “master molecule” in genetics, but its erstwhile servant, RNA, is gaining increased recognition for its many essential functions. Read More ›
meteorite
Image credit: Frantisek_Krejci, via Pixabay.

An Extraterrestrial Spin on the RNA World

The authors argue that RNA molecules appeared in warm little ponds more than 4.17 billion years ago, transported by “meteorites and interplanetary dust particles." Read More ›

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