UNIVERSITY PARK, Pa. — Everyone eats. However, only some have enough to eat.

That problem is the focus of a new online textbook for undergraduate students titled, “Everyone Needs to Eat: An Introduction to Food Security and Global Agriculture.”

Written by graduate students in Penn State’s College of Agricultural Sciences, the book is an in-depth examination of the ecological, economic, social, political and technological factors that influence whether a person, community or nation is considered food secure.

“Everyone on Earth is united by a basic need for calories to remain alive,” said Melanie Miller Foster, associate teaching professor of international agriculture and a co-editor of the book. “Unfortunately, there are dramatic differences in food security. While some people have so much food that they can’t eat it fast enough before it rots, others struggle to find their next meal.”

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