Articles on Pollution

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Some of the highest coronavirus hospitalization rates in Denver are in neighborhoods near Valverde, a community that was once redlined. RJ Sangosti/Denver Post via Getty Images

Is your neighborhood raising your coronavirus risk? Redlining decades ago set communities up for greater danger

Neighborhood characteristics like pollution from busy roads, widespread public transit use and lack of community-based health care are putting certain communities at greater risk from COVID-19.
MomentsForZen/Flickr

The smoke from autumn burn-offs could make coronavirus symptoms worse. It’s not worth the risk

Expanding planned burning is often touted as a way to lessen the risk of bushfires. But this burn-off season is bad news for the COVID-19 pandemic.
The amount of cadmium content in cocoa beans depends on the location and soil conditions where the chocolate plant is grown and type of chocolate plant itself. iravgustin/Shutterstock

Chocolate contains cadmium that can increase cancer risk

Chocolate plants can absorb cadmium through their roots and store it in chocolate leaves and seeds. Cadmium levels in processed chocolate depending on the production process and the producers.
Industrial activities like mining, fossil fuel combustion, and cement production release mercury into the environment. Shutterstock

Plants safely store toxic mercury. Bushfires and climate change bring it back into our environment

Plants can store mercury and keep it from contaminating waterways, air and soils. Unfortunately, that mercury is released when plants burn.
Water purification at a modern urban wastewater treatment plant involves removing undesirable chemicals, suspended solids and gases from contaminated water. arhendrix/Shutterstock.com

Microwaving sewage waste may make it safe to use as fertilizer on crops

The solids from wastewater plants are usually dumped into landfills because they are contaminated with heavy metals. Now there is a way to remove the metals so the waste can be used as fertilizer.

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