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Articles on Bacteria

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Schools in Ohio and Pennsylvania have already found Legionella, the bacteria that causes Legionnaires’ disease, in their water systems. Andrew Whelton/Purdue University

Dangerous bacteria is showing up in school water systems, reminding all buildings closed for COVID-19 to check the pipes

When water stagnates in pipes, harmful metals and bacteria can accumulate and make people sick. Buildings that were shut down for weeks during the pandemic may be at risk.
Not all clouds are the same, and climate models have been predicting the wrong kinds of clouds over the Southern Ocean. Kathryn Moore


Climate models have been overestimating how much sunlight hits the Southern Ocean. This is because the clouds there are different from clouds anywhere else. Bacterial DNA helped us understand why.
Discolored water can be caused by heavy metals, such as iron or copper. Iron can also act as a nutrient for organisms to grow in the pipes. Kyungyeon Ra/Purdue University

The coronavirus pandemic might make buildings sick, too

Office buildings have been left mostly empty for weeks amid the coronavirus pandemic, leaving standing water in pipes where harmful organisms can grow. What happens when those buildings reopen?

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