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Some fungi and bacteria live in close association, or symbiosis, with tree roots in forest soil to obtain mutual benefits. The microorganisms help trees access water and nutrients from the atmosphere or soil, sequester carbon, and withstand the effects of…

Dominant, non-native plants reduce wetland biodiversity and abundance more than native plants do, researchers report in the journal Ecology Letters. Even native plants that dominate wetland landscapes play better with others, the team found. The researchers analyzed 20 years of…

Native forests make up 1% of the landscape in South Africa but could play a key role in reducing atmospheric carbon and identifying sustainable development practices that can be used globally to counter climate change, according to a Penn State…

The sweet, starchy orange sweet potatoes are tasty and nutritious ingredients for fries, casseroles and pies. Although humans have been cultivating sweet potatoes for thousands of years, scientists still don’t know much about the protein makeup of these tubers. In…