Human Carnivory Project

The human carnivory project emphasizes, in the broadest terms, the effects of humans eating meat on the environment and climate. Illustrated here are the effects of livestock populations on greenhouse gas emissions, biodiversity, riparian ecosystems, and iconic wildlife including wolves, lions, rhinos, and more.

The Human Carnivory Project has a youtube channel, check it out!

Recent News

Would you give up beef if it meant saving the planet?

Australian Popular Science, May 31, 2017: Replacing beef with beans could save the planet, because people farts are better than cow farts 

Science, October 18, 2016: People are hunting primates, bats, and other mammals to extinction

Smithsonian.com, November 2, 2016: A New Report Says We're Hunting the World's Mammals to Death. What Can Be Done?



Harwatt H, Sabate J, Eshel G, Soret S, Ripple W.J. 2017. Substituting beans for beef as a contribution toward US climate change targets. Climatic Change.

Ripple W.J., Abernethy K., Betts M.G., Chapron G., Dirzo R., Galetti M., Levi T., Lindsey P.A., Macdonald D.W., Machovina B. et al.. 2016. Bushmeat hunting and extinction risk to the world's mammals. The Royal Society Open Science.

Ripple W.J., Newsome T.M., Wolf C., Dirzo R., Everatt K.T., Galetti M., Hayward M.W., Kerley G.I.H., Levi T., Lindsey P.A. et al. 2015. Collapse of the world's largest herbivores. Science Advances.1(4)

Machovina B., Feeley K.J., Ripple W.J. 2015. Biodiversity conservation: The key is reducing meat consumption. Science of the Total Environment. 536:419-431.

Batchelor J.L., Ripple W.J., Wilson T.M., Painter L.E. 2015. Restoration of Riparian Areas Following the Removal of Cattle in the Northwestern Great Basin. Environmental Management. 55(4):930–942.

Ripple W.J., Smith P., Haberl H., Montzka S.A., McAlpine C., Boucher D.H. 2014. Commentary: Ruminants, climate change and climate policy. Nature Climate Change. 4:2-5.

Ripple W.J., Estes J.A., Beschta R.L., Wilmers C.C., Ritchie E.G., Hebblewhite M., Berger J., Elmhagen B., Letnic M., Nelson M.P et al. 2014. Status and Ecological Effects of the World's Largest Carnivores. Science. 343