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On September 26, 2017, the Operational Land Imager (OLI) on the Landsat 8 satellite captured these natural-color images of a large phytoplankton bloom in western Lake Erie. According to the National Oceanic and Atmospheric Administration, the bloom contains microcystis, a type of freshwater cyanobacteria. These phytoplankton produce toxins that can contaminate drinking water and pose a risk to human and animal health (skin irritant, respiratory distress) when there is direct contact. A few days earlier, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA?s Terra satellite captured a wider view of the lake. Blooms tend to thrive in Lake Erie during summer, sustained by warm water temperatures and nutrients from farm runoff. This year, the bloom has been ongoing since mid-July. NASA Earth Observatory image by Joshua Stevens, using Landsat data from the U.S. Geological Survey. Caption by Kathryn Hansen.

Environment

Algal blooms in freshwater lakes are becoming more common worldwide

Lakes across the world have seen an increase in algal blooms that strangle freshwater ecosystems, according to an analysis of satellite images from 1982 to 2019

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KW40RY hong kong traffic jam

Environment

Hong Kong’s car pollution sensors help it clean its air in world first

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The Evenlode is a 75 kilometre-long river in the Cotswolds, England, plagued with water pollution in recent years. Aerial view of the Evenlode.

Environment

How a Cotswolds river may show the way to clean up England's waterways

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2BNF11C Garbage at the Ant Flat Landfill in Wallowa County, Oregon.

Environment

Pollution is the forgotten global crisis and we need to tackle it now

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Marbled white butterfly (Melanargia galathea), feeding on Greater knapweed flower (Centaurea scabiosa), Wiltshire, England

Environment

Air pollution makes it harder for pollinators to find plants

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NEW DELHI, INDIA - NOVEMBER 4: A view of Vikas Marg ITO traffic junction on the first day of the Odd-Even traffic regulation scheme on November 4, 2019 in New Delhi, India. The third edition of the odd-even road space rationing drive saw fewer prosecutions on Monday compared to the first day of the previous arrangement in April, 2016. The Odd-Even scheme will be in force until November 15. It entails private vehicles with registration numbers ending with odd digits to be allowed on odd dates and those with even digits on even dates.(Photo by Raj K Raj/Hindustan Times)

Health

One in 12 new cases of asthma in children linked to NO2 air pollution

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Los Angeles

Environment

Extreme air pollution from US wildfires now affects millions of people

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2EXXD38 March 3, 2021: The Brazilian Ministry of Health, with support from the Armed Forces, applies vaccines to indigenous people in the village of Iuarete, municipality of Sao Gabriel da Cachoeira, in the state of Amazonas, on Wednesday (3).The action immunized, against Covid19, about 350 indigenous people in the villages of Taracua Igarape and Santo Atanasio, which are in areas of difficult access in the Amazon Forest, on the border between Brazil and Colombia. Credit: Paulo Lopes/ZUMA Wire/Alamy Live News

Environment

Indigenous groups threatened by gold exploration in remote Amazon

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Northern pike / (Esox lucius)

Environment

Freshwater fish can recover from mercury pollution in just a few years

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Cars in a traffic jam surrounded by steam from their exhaust pipes

Health

Thousands of lives being saved as US moves to less-polluting vehicles

Almost 8000 fewer lives are being lost to air pollution from vehicle emissions in the US per year, thanks to cleaner engines that produce fewer tiny particles

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Environment

Plastic food packaging gets a bad rap, but does it always deserve it?

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How do humans affect the nitrogen cycle?

Environment

Cutting ammonia emissions may be the best way to reduce air pollution

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Environment

Air pollution from G20 consumers caused two million deaths in 2010

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