Harvey Leifert

Harvey Leifert, harveywriting@verizon.net, is a freelance science writer based in Bethesda, Maryland. He previously served as public information manager for the American Geophysical Union and as a Foreign Service officer with the U.S. Information Agency.

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Recent Stories

A true but unlikely tale

Story and Photographs by William Rowan

Increasing day length on the early Earth boosted oxygen released by photosynthetic cyanobacteria.

Genomic evidence shows that Denisovans and modern humans may have overlapped in Wallacea.

Evapotranspiration is the largest source of water vapor in the Congo rainforest during the spring rainy season.