A new look at ancient rocks suggests that a self-sustaining nutrient cycle in ancient oceans helped keep Earth's atmosphere rich in oxygen for millions of years.

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 ...

Introduction—To live is to maintain a flow of reactionsLast time, we introduced proteins, carbohydrates, lipids, and nucleic ...

Is there life elsewhere, or is Earth unique in the universe? This is one of humanity's great unanswered questions. One way to approach this mystery is to investigate how life began here on Earth. Our ...

Scientists want to create cells from scratch, to unveil life’s origins or provide specialized functions. Are they close?

As you climb up the rabbit's fur little by little with Sophie from page 40 to near page 60, the story finally enters the ...

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

A 3-D thermal model identifies a ~ 4.33 Ga temporal “sweet spot” for life’s origin, when decreased bombardment enabled mild hydrothermal niches to support RNA World chemistry and stable biomolecule ...

RNA and DNA are chemical cousins. But one tiny difference between them (an extra oxygen atom repeated along RNA’s backbone) can radically change how the molecules behave. Researchers have now found ...

Great TV was everywhere in 2011, from splashy debuts to veteran series hitting their stride. It was a year when premium ...

Enceladus is hardly an inviting place. It sits 1.5 billion kilometers from the Sun, covered by a thick frozen exterior. Yet ...

Just a few weeks ago, a video of LeBron James, Jaylen Brown, and Tyrese Maxey training together went viral. The NBA world was surprised to see the chemistry between them.