Tukpahlearik Creek in northwestern Alaska’s Brooks Range runs bright orange where permafrost is thawing. Photo: Taylor Roades / Scientific American

Why are Alaska’s rivers turning orange? “It was a famous, pristine river ecosystem, and it feels like it’s completely collapsing now”

By Alec Luhn 24 December 2023 (Scientific American) – It was a cloudy July afternoon in Alaska’s Kobuk Valley National Park, part of the biggest stretch of protected wilderness in the U.S. We were 95 kilometers (60 miles) from the nearest village and 400 kilometers from the road system. Nature doesn’t get any more unspoiled. […]

Change in percentage of U.S. kindergartners exempt from one or more vaccinations, by jurisdiction, 2021–22 and 2022–23 school years. From the 2019–20 to the 2021–22 school year, national coverage with state-required vaccines among kindergartners declined from 95 percent to approximately 93 percent, ranging from 92.7 percent for diphtheria, tetanus, and acellular pertussis vaccine (DTaP) to 93.1 percent for polio. During the 2022–23 school year, coverage remained near 93 percent for all reported vaccines, ranging from 92.7 percent for DTaP to 93.1 percent for measles, mumps, and rubella and polio. The exemption rate increased 0.4 percentage points to 3.0 percent. Exemptions increased in 41 states, exceeding 5 percent in 10 states. Exemptions >5 percent limit the level of achievable vaccination coverage, which increases the risk for outbreaks of vaccine-preventable diseases. Vaccination before school entry or during provisional enrollment periods could reduce exemptions resulting from barriers to vaccination during the COVID-19 pandemic. Graphic: Seither, et al., 2023 / CDC

School vaccination exemptions in U.S. now highest on record among kindergartners, CDC reports

By Sara Moniuszko 9 November 2023 (CBS News) – A record number of American kindergarten students started school last year with an exemption from one of the key vaccines health authorities require, according to new data from the Centers for Disease Control and Prevention. In the report published Thursday, the CDC examined immunization program data to […]

Average age at death in U.S. counties, 2020. Data: CDC Death Records. The U.S. is experiencing the greatest gap in life expectancy across regions in the last 40 years. Americans born in certain areas of Mississippi and Florida may die 20 years younger than their peers born in parts of Colorado and California. Graphic: Jeremy Ney / American Inequality

Americans are dying younger, and where you live makes a big difference – Americans born in Mississippi and Florida may die 20 years younger than their peers born in Colorado and California

By Jeremy Ney 12 April 2023 (TIME) – The average U.S. life expectancy has hit its worst decline in 100 years and America’s standing is dismal among peer nations. But the average obscures a more complex story. The United States is facing the greatest divide in life expectancy across regions in the last 40 years. Research from American […]

Regional glacier mass change and contributions to sea level rise from 2015 to 2100. Discs show global and regional projections of glacier mass remaining by 2100 relative to 2015 for global mean temperature change scenarios. Discs are scaled based on each region’s contribution to global mean sea level rise from 2015 to 2100 for the +2°C scenario by 2100 relative to preindustrial levels, and nested rings are colored by temperature change scenarios showing normalized mass remaining in 2100. Regional sea level rise contributions >1 mm SLE for the +2°C scenario are printed in the center of each disc. The horizontal bars below each disc show time series of area-averaged annual mass balance from 2015 to 2100 for +1.5°C (top bar) and +3°C (bottom bar) scenarios. The colorbar is saturated at −2.5 m w.e., but minimum annual values reach −4.2 m w.e. in Scandinavia. Graphic: Rounce, et al., 2022 / Science

Half of glaciers will be gone by 2100 even under Paris 1.5C accord, study finds

By Phoebe Weston 5 January 2023 (The Guardian) – Half the planet’s glaciers will have melted by 2100 even if humanity sticks to goals set out in the Paris climate agreement, according to research that finds the scale and impacts of glacial loss are greater than previously thought. At least half of that loss will happen […]

Maasai children stand beside a zebra that local residents say died due to drought, as they graze their cattle at Ilangeruani village, near Lake Magadi, in Kenya, on 9 November 2022. Photo: Brian Inganga / AP Photo

In 2022, AP photographers captured pain of a changing planet

By Peter Prengaman 16 December 2022 (AP) – In 2022, Associated Press photographers captured signs of a planet in distress as climate change reshaped many lives. That distress was seen in the scarred landscapes in places where the rains failed to come. It was felt in walloping storms, land-engulfing floods, suffocating heat and wildfires no […]

Map showing GFS 2m Temperature Anomaly for 20 December 2022. Much of the Arctic in December 2022 experienced a burst of freak warming. Graphic: Climate Reanalyzer

December 2022 serving up baked Alaska and warming most of Arctic – “Record-setting weather like we’re seeing plenty of examples of in recent years does tell a real story of climate heating”

By Seth Borenstein 5 December 2022 (AP) – Much of the Arctic is in a burst of freak December warming. In Utqiagvik, Alaska’s northernmost community formerly known as Barrow, it hit 40 degrees (4.4 degrees Celsius) Monday morning. That’s not only a record by six degrees (3.3 degrees Celsius) but it’s the warmest that region has seen […]

Arctic annual air surface temperatures from October 2021 to September 2022 were the sixth warmest dating back to 1900. The image on the left depicts the departure from the average near-surface temperature across the Arctic during this period, with redder colors showing areas of greater than average warmth. The graphic on the right shows how the rate of Arctic air temperature warming has outpaced the rate of global warming. Data: ERA5 and NASA. Graphic: NOAA / Climate.gov

NOAA: Human-caused climate change fuels warmer, wetter, stormier Arctic

13 December 2022 (NOAA) – A typhoon, smoke from wildfires, and increasing rain are not what most imagine when thinking of the Arctic. Yet these are some of the climate-driven events included in NOAA’s 2022 Arctic Report Card, which provides a detailed picture of how warming is reshaping the once reliably frozen, snow-covered region which […]

Landsat images from 21 February 2000 (left) and 27 July 2019 (right) illustrating glacier retreat on top of Mount Kilimanjaro (United Republic of Tanzania). Photo: U.S. Geological Survey

Kilimanjaro’s and Africa’s last glaciers to go by 2050, says UN – “What is quite unprecedented in the historical record is how quickly this is happening”

By Patrick Hughes 3 November 2022 (BBC News) – Glaciers across the globe – including the last ones in Africa – will be unavoidably lost by 2050 due to climate change, the UN says in a report [UNESCO finds that some iconic World Heritage glaciers will disappear by 2050 –Des]. Glaciers in a third of […]

Annual temperatures for Alaska, 1900-2018. Alaska’s ten coldest years on record (blue dots) all occurred before 1980. Meanwhile, nine of its ten warmest years on record have occurred since 1980. Data: NASA GISS and UAF / Brian Brettschneider. Graphic: Rick Thoman / Alaska Center for Climate Assessment and Policy

Warming waters causing mass die-off of Alaska snow crabs – Total numbers down 84 percent since 2018 – “The cold-water habitat they need was virtually absent, which suggests that temperature is really the key culprit in this population decline”

20 October 2022 (CBS News) – Climate change is a prime suspect in a mass die-off of Alaska’s snow crabs, experts say, after the state took the unprecedented step of canceling their harvest this season to save the species. According to an annual survey of the Bering Sea floor carried out by the National Oceanic and Atmospheric Administration, […]

Two men walk through rushing water on Front Street in Nome, Alaska, just a half block from the Bering Sea, on 17 September 2022. Photo: Peggy Fagerstrom / AP

Western Alaska confronts damage after historic storm – “Boats are going to be scattered all over the tundra”

By Taylor Telford 18 September 2022 (The Washington Post) – Floodwaters began receding in Alaska on Sunday, revealing the damage after the remnants of a typhoon lashed the state with its fiercest storm in years. The full extent of the storm’s impact may not be clear for days, but residents across the state’s low-lying western coast […]

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