Roberta Kwok

Contributing Writer

geophysics

How Life and Luck Changed Earth’s Minerals

Did the minerals on our planet arise in a predictable fashion, or did they result from chance events? The answers could eventually help scientists identify planets likely to harbor life.

About the author

Roberta Kwok is a freelance science writer based in Seattle, Washington. Her work has appeared in Nature, New Scientist, Salon.com, Conservation, and U.S. News & World Report.