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A new study used modern methods to reassess a foundational study in biology that explained how ecologically similar species of wood warblers coexist. The research team examined foraging behavior, physical characteristics, diet and evolutionary history of 13 warbler species, including the black-throated green warbler (Setophaga virens) pictured here, and found that how these songbirds coexist is more nuanced than originally proposed. Credit: Ronnie d'Entremont. All Rights Reserved.

Apr 16, 2025

Foraging on the wing: How can ecologically similar birds live together?

New study uses modern molecular and evolutionary techniques to reassess a foundational, 67-year-old study in warblers.

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The study found that increased salt content in tomato plants reduces fruitworm caterpillar feeding and limits the number of eggs that moths lay on these plants. Credit: Sahil Pawar. All Rights Reserved.

Apr 16, 2025

Feeling salty? Increased salt stress reduces tomato pest activity

Increased soil salinity can reduce damage from prominent tomato pests such as the tomato fruitworm, according to researchers at Penn State. They published their findings in the Journal of Plant, Cell and Environment.

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Apr 09, 2025

Complete genome sequences of six ape species unveiled

Differences among the DNA of seven ape species — including humans — are greater than originally thought, according to an international team led by researchers at Penn State, the National Human Genome Research Institute, and the University of Washington.

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The findings could help drive future research as well as help evaluate the costs and benefits of pesticide use in agroecosystems, the researchers said. Credit: Kym MacKinnon/Unsplash. All Rights Reserved.

Apr 10, 2025

Even sublethal insecticide dose may disrupt pollinator mating process

Insecticides can help protect crops against troublesome pests, but they also pose a risk for beneficial insects such as pollinators. A new study led by researchers at Penn State provided insight into how even sublethal doses of insecticides can negatively affect pollinators by disrupting the mating process.

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Credit: guenterguni/Getty Images. All Rights Reserved.

Apr 09, 2025

Complete genome sequences of six ape species unveiled

Previously inaccessible regions reveal novel insights that may advance understanding of evolution and conservation genetics for endangered apes as well as human health.

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As AI expands, so does its environmental footprint, from high energy use to e-waste. But with efficient models, greener infrastructure and smarter design, the tech industry can curb its impact and improve its sustainability. Credit: Adobe Stock. All Rights Reserved.

Apr 10, 2025

Q&A: Can artificial intelligence growth and sustainability go hand in hand?

Optimizing AI to use less energy and protect the environment

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Credit: Penn State. Creative Commons

Apr 07, 2025

Forty-two graduate students recognized with University awards

Annual awards celebrate graduate students' impact in research, scholarship, teaching, outreach and more.

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In a recent study, a team of researchers led by Penn State scientists tested a new hypothesis for why some species of butterflies and moths have very specific diets, feeding on only a few types of plants, while others are far less picky. Credit: Nick Sloff / Penn State. Creative Commons

Apr 04, 2025

Picky eaters by day, buffet by night: Butterfly, moth diets sync to plant aromas

In a recent study published in the journal Proceedings of the Royal Society B, an international team of researchers tested a new hypothesis for why some Lepidoptera have very specific diets, feeding on only a few types of plants, while others are far less picky.

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On the latest episode of “Growing Impact,” a team of Penn State researchers discusses how their seed grant project aims to address nitrous oxide emissions from the agricultural sector by developing a system for real-time emissions monitoring and reduction.

Apr 01, 2025

Researchers working to address agricultural greenhouse gas emissions

On the latest episode of “Growing Impact,” a team of Penn State researchers discusses how their seed grant project aims to address nitrous oxide emissions from the agricultural sector by developing a system for real-time emissions monitoring and reduction.

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Erika Machtinger researching in the field

Mar 31, 2025

Machtinger harnesses the power of collaboration to solve complex problems

Erika Machtinger is a veterinary entomologist whose work impacts wildlife, agriculture, industry, and public health across the U.S. Her efforts hinge upon the unique, interdisciplinary ecosystem of researchers and resources at Penn State.

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