"visual aid"

#13229425

22 January 2026

KRAKOW, POLAND – JANUARY 20: A view of Krakow’s Podgorze district and Old Town from Krakus Mound as the city experiences 'Very Unhealthy' air pollution levels (AQI over 200), ranking it among the world’s most polluted cities on January 20, 2026, in Krakow, Poland.

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#13229426

22 January 2026

KRAKOW, POLAND, JANUARY 20: A view over Krakow's Nowa Huta district, with the Krakow district heating and power plant in the background, as air pollution reaches 'Very Unhealthy' levels (AQI over 200), ranking the city among the most polluted in the world on the date. in Krakow, Poland, on January 20, 2026.

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#13229428

22 January 2026

KRAKOW, POLAND – JANUARY 20: A view of Krakow’s Podgorze district and Old Town from Krakus Mound as the city experiences 'Very Unhealthy' air pollution levels (AQI over 200), ranking it among the world’s most polluted cities on January 20, 2026, in Krakow, Poland.

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#13229430

22 January 2026

KRAKOW, POLAND – JANUARY 20: A view of Krakow’s Podgorze district and Old Town from Krakus Mound as the city experiences 'Very Unhealthy' air pollution levels (AQI over 200), ranking it among the world’s most polluted cities on January 20, 2026, in Krakow, Poland.

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#13229431

22 January 2026

KRAKOW, POLAND – JANUARY 20: A view of Krakow’s Podgorze district and Old Town from Krakus Mound as the city experiences 'Very Unhealthy' air pollution levels (AQI over 200), ranking it among the world’s most polluted cities on January 20, 2026, in Krakow, Poland.

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#13229433

22 January 2026

KRAKOW, POLAND, JANUARY 20: A view over Krakow's Nowa Huta district, with the Krakow district heating and power plant in the background, as air pollution reaches 'Very Unhealthy' levels (AQI over 200), ranking the city among the most polluted in the world on the date. in Krakow, Poland, on January 20, 2026.

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#13229432

22 January 2026

KRAKOW, POLAND – JANUARY 20: A view of Krakow’s Podgorze district and Old Town from Krakus Mound as the city experiences 'Very Unhealthy' air pollution levels (AQI over 200), ranking it among the world’s most polluted cities on January 20, 2026, in Krakow, Poland.

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#13228871

22 January 2026

KRAKOW, POLAND – JANUARY 22: An information board displays very high PM10 air pollution levels, showing a reading of 144, in the center of Krakow, Poland, on January 22, 2026. A thick layer of smog persisted throughout the day as air quality indicators reached 'Very Unhealthy' levels, varying by location across the city, with some areas recording AQI readings above 190 and other monitoring stations reporting values between 150 and over 200, ranking Krakow again among the world’s most polluted cities on the date.

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#13228879

22 January 2026

KRAKOW, POLAND – JANUARY 22: An information board displays very high PM10 air pollution levels, showing a reading of 144, in the center of Krakow, Poland, on January 22, 2026. A thick layer of smog persisted throughout the day as air quality indicators reached 'Very Unhealthy' levels, varying by location across the city, with some areas recording AQI readings above 190 and other monitoring stations reporting values between 150 and over 200, ranking Krakow again among the world’s most polluted cities on the date.

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#13228888

22 January 2026

KRAKOW, POLAND – JANUARY 22: An information board displays very high PM10 air pollution levels, showing a reading of 144, in the center of Krakow, Poland, on January 22, 2026. A thick layer of smog persisted throughout the day as air quality indicators reached 'Very Unhealthy' levels, varying by location across the city, with some areas recording AQI readings above 190 and other monitoring stations reporting values between 150 and over 200, ranking Krakow again among the world’s most polluted cities on the date.

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#13189735

13 January 2026

A view of tents used by displaced Palestinians is seen during a windy winter day in Gaza City, on January 13, 2026.

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#13189748

13 January 2026

A view of tents used by displaced Palestinians is seen during a windy winter day in Gaza City, on January 13, 2026.

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#13189818

13 January 2026

A view of tents used by displaced Palestinians is seen during a windy winter day in Gaza City, on January 13, 2026.

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#13182840

11 January 2026

Signs in a shop show different learning styles in Toronto, Ontario, Canada, on January 10, 2026.

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#13180698

11 January 2026

Palestinians walk near a pile of garbage among tents sheltering displaced Palestinian families in Gaza City, Palestine, on January 11, 2026.

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#13180699

11 January 2026

Palestinians walk near a pile of garbage among tents sheltering displaced Palestinian families in Gaza City, Palestine, on January 11, 2026.

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