COGNICURRENT

Scientists express concerns over the impacts of increasing space debris on the Earth's atmosphere, particularly on the ozone layer and solar radiation levels.

A UNAM researcher argues that the Hoy No Circula program is becoming ineffective in combating pollution in Mexico City and the State of Mexico amid rising ozone levels.

The environmental contingency in Mexico City and the State of Mexico has been lifted, allowing normal vehicle circulation after two days of restrictions.

An environmental contingency due to ozone remains in Phase 1 in the Mexico City Metropolitan Area, with ongoing measures to reduce exposure to polluted air and emissions.

The Phase I environmental contingency due to air pollution in Mexico City and the State of Mexico continues with restrictions aimed at protecting public health and reducing ozone levels.

The environmental contingency phase 1 due to ozone has been activated in Mexico City and Edomex for February 16, 2026, to reduce emissions and exposure.

An environmental contingency due to ozone is in effect in Mexico City and the State of Mexico, extending restrictions on vehicle circulation due to poor air quality.

The environmental contingency phase due to ozone has been suspended in Mexico City and the State of Mexico due to improved air quality.

The environmental contingency due to ozone levels continues in Mexico City and the State of Mexico for the third consecutive day, as authorities seek to reduce health risks for residents.

The environmental agency CAMe has announced the continuation of the Double No Circulation measure in Mexico City and the State of Mexico on February 14 due to poor air quality.

The Environmental Commission of the Megalopolis announced that Phase I of the environmental contingency for ozone pollution remains in effect, affecting car circulation in Mexico City and the State of Mexico.

An environmental contingency was declared in Mexico City due to high ozone levels, reaching 155 ppb in Coyoacán, exacerbated by weather conditions.

Air quality in Mexico City remains poor, particularly in four municipalities, despite avoiding a Doble Hoy No Circula restriction on February 11.

The air quality in Mexico City is reported to be critically poor, prompting alerts and the potential for environmental contingencies due to high levels of pollutants.

Environmental authorities are warning of poor air quality in Mexico City and the State of Mexico, possibly leading to a double Hoy No Circula contingency this week.

Czech ozone generators are being deployed to the front lines of Ukraine amid ongoing conflict.

German scientists have found that air pollutants, especially ozone, alter ants' ability to return to their nests after foraging trips.

The EPA has revised its approach regarding the assessment of costs and benefits related to air pollution regulations, particularly no longer factoring in the economic cost of health impacts from fine particles and ozone.

Madrid has met European air quality regulations for the fourth consecutive year in 2025, but nitrogen dioxide levels remain stagnant and ozone pollution worsens, indicating that the city is still off track for the 2030 standards.

Greek tennis stars Maria Sakkari and Stefanos Tsitsipas celebrated the New Year by climbing to the roof of Ozone Optus Stadium in Perth and waving the Greek flag.

The Montreal Protocol, effective since January 1, 1989, is considered a landmark treaty in global ecology that commits signatory countries to phase out the production of chlorofluorocarbons to protect the ozone layer.