Ever since the term “Snowball Earth” was first proposed in a 1992 paper, it has prompted substantial debate among scientists.

But to find that complexity, we must take the lessons of the boring billion to heart. Planets are not just a stage on which ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

and the geologist who ten years ago was embarrassed by the shortness of the time allowed to him for the evolution of the earth's crust is now still more embarrassed by the superabundance with ...

The entries emphasize chance’s prominent role in evolution. For instance ... weaving illuminating natural history into ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, ...

Chromosphaera perkinsii, a billion-year-old species, may reveal multicellularity’s origins, predating the chicken and egg.

The fossil filled a 70-million-year gap in the understanding of how the brains of birds evolved: between the 150-million-year ...

L ike many of us, Earth bears old pockmarks. Our planet’s crust has a band of ancient craters that formed around 465 million ...

Evolution had usually been thought of in reference to earthbound processes. (It still is, in most cases.) But today, we can consider how a near-miss asteroid and a possible ring around Earth ...