Annual hot-hours under (A) 1.5, (B) 2, (C) 3, and (D) 4 °C of warming relative to preindustrial level, (E) population projection in 2050 following the Shared Socioeconomic Pathway 2, and (F) population subject to accumulated duration of 1 wk to 3 mo of uncompensable heat stress annually under 1–4 °C of global warming (the shaded area corresponds to the 10th to 90th percentiles of CMIP6 model spread). Rectangles in panel a delineate regions where heat exposure increases with global warming are particularly large and will be examined in detail in later sections. Graphic: Vecellio, et al., 2023 / PNAS

Climate-driven extreme heat may make parts of Earth too hot for humans – “If temperatures continue to rise, we will live in a world where crops are failing and millions or billions of people are trying to migrate because their native regions are uninhabitable”

By Aaron Wagner 9 October 2023 UNIVERSITY PARK, Pa. (PennState) – If global temperatures increase by 1 degree Celsius (C) or more than current levels, each year billions of people will be exposed to heat and humidity so extreme they will be unable to naturally cool themselves, according to interdisciplinary research from the Penn State […]

U.S. federal government outlays for net interest (12-month rolling sum), 1985-2023. Data are current through August 2023. Data: LSEG Datastream. Graphic: Kripa Jayaram / Reuters

As global debt worries mount, is another crisis brewing? “You can take many, many countries today, and you will see that we are not far away from a public finances crisis”

By Yoruk Bahceli, Dhara Ranasinghe, and Maria Martinez 16 October 2023 LONDON (Reuters) – Record debts, high interest rates, the costs of climate change, health, and pension spending as populations age and fractious politics are stoking fears of a financial market crisis in big, developed economies. A surge in government borrowing costs has put high debt in […]

Geographical pattern of the primary drivers of deteriorating status among amphibians. a,b, The primary drivers of deteriorating status among amphibians during 1980–2004 (482 species; a) and 2004–2022 (306 species; b). Cell colour was determined by the primary driver impacting the most species. Where two primary drivers equally contribute to a cell, an intermediate colour is shown. The stars indicate where the primary driver is undetermined or there are numerous primary drivers. The cell area is 7,775 km2. Graphic: Luedtke, et al., 2023 / Nature

Climate change emerges as major driver of amphibian declines, new research finds – “It’s a gut punch and an awakening”

By JoAnn Adkins 4 October 2023 (FIU) – Amphibians are in trouble and in desperate need of conservation action, according to a new global assessment of the world’s amphibian population. Salamanders are experiencing the greatest decline in numbers, but frogs, toads, newts, and salamanders throughout the Neotropics — extending from South Florida and Caribbean islands […]

Satellite view of burned area and wildfires in Greece, 19 August 2023 - 14 September 2023. More than 672 square miles had burned through September 2023. Photo: European Union / Copernicus Sentinel / EO Browser

Two months of fire and flood: Greece’s climate disasters in 2023, visualized – “An unprecedented weather event, a catastrophe of immense proportions”

By Mithil Aggarwal and Jiachuan Wu 8 October 2023 (NBC News) – Greece is at war with climate change. Wildfires and record rainfall devastated the country this summer, first scorching entire forests then flooding complete towns. Here’s a look at two months of disasters that will leave the country changed for years. The fires The blaze […]

This graph shows Antarctic sea ice extent as of 10 September 2023, along with daily ice extent data for four previous years and the record maximum year. 2023 is shown in blue, 2022 in green, 2021 in orange, 2020 in brown, 2019 in magenta, and 2014 in dashed brown. The 1981 to 2010 median is in dark gray. The gray areas around the median line show the interquartile and interdecile ranges of the data. Graphic: National Snow and Ice Data Center

Antarctic sea ice sets a record low maximum by wide margin – “Polar ice is one of the world’s biggest insurance policies against runaway climate change, and we can see in both the North and the South sea ice, we’ve got problems and alarm bells are ringing”

By Kasha Patel 25 September 2023 (The Washington Post) – Sea ice levels around Antarctica just registered a record low — and by a wide margin — as winter comes to a close, according to the National Snow and Ice Data Center (NSIDC). This significant milestone adds worry that Antarctic sea ice may be entering […]

Number of generic extinctions per century among in different classes of vertebrates. The low number of reptiles and amphibia, which underestimate the magnitude of extinction pattern, is probably the result of the lack of information in earlier centuries, where very few species had been described. The dotted line represents the background extinction rate. Graphic: Ceballos and Ehrlich, 2023 / PNAS

Study finds human-driven mass extinction is eliminating entire branches of the tree of life – “We’re losing our only known living companions in the entire universe”

By Sean Cummings 18 September 2023 (Stanford News) – The passenger pigeon. The Tasmanian tiger. The Baiji, or Yangtze River dolphin. These rank among the best-known recent victims of what many scientists have declared the sixth mass extinction, as human actions are wiping out vertebrate animal species hundreds of times faster than they would otherwise […]

Percent prevalence of undernourishment, 2015-2022. Data: FAOSTAT Suite of Food Security Indicators, cited 12 July 2023. Graphic: Gallup

Hunger, food insecurity still higher than before pandemic – At the global level, there was no progress toward reducing food insecurity in 2022

30 August 2023 (Gallup) – Although hunger at the global level stopped rising in 2022, the latest State of Food Security and Nutrition in the World (SOFI) report shows that it is still increasing in many places around the world and that levels of both hunger and food insecurity remain higher today than they were before the pandemic. […]

Carbon dioxide emission reductions, in gigatons, required to limit warming to 2°C if climate action action were taken in each year from 2000 to 2029. Data: Robbie Andrew / Global Carbon Project. Graphic: Clayton Aldern / Grist

Humans are releasing greenhouse gases at level unprecedented in geologic history – “Uncertainty is not our friend”

By Saul Elbein 7 September 2023 (The Hill) – Human civilization came to be thanks to the comparatively stable climate of the past 10,000 years. But the unchecked burning of fossil fuels is undermining that foundation, according to a leading climate scientist. “There is no analog in the past for the rapid warming” we are […]

A combination picture shows satellite images of Ozello, Florida before flooding (L) on 12 January 2023 and flooding in the aftermath of Hurricane Idalia in Florida, U.S., 30 August 2023. Photo: Maxar Technologies / REUTERS / CBS News

Home insurers cut natural disasters from policies as climate risks grow – “The same risks that are making insurance more important are making it harder to get”

By Jacob Bogage 3 September 2023 (The Washington Post) – In the aftermath of extreme weather events, major insurers are increasingly no longer offering coverage that homeowners in areas vulnerable to those disasters need most. At least five large U.S. property insurers — including Allstate, American Family, Nationwide, Erie Insurance Group and Berkshire Hathaway — […]

CAMS Daily total cumulative carbon emissions from Canada wildfires in 2023, compared with emissions since 2003. Data for 2023 are current through 28 August 2023. Growth in fire emissions have surpassed 2014 to set a new record for the last two decades. Graphic: Mark Parrington / Copernicus Atmosphere Monitoring Service

Wildfires in Canada’s Northwest Territories have released 97 megatons of carbon, 277 times what its people emit – Emissions from wildfires across Canada in 2023 vastly exceed the 2014 record

By Liny Lamberink 28 August 2023 (CBC News) – Wildfires in the N.W.T have emitted 97 megatonnes of carbon into the air so far this year — 277 times more than what was caused by humans in the territory back in 2021. Mark Parrington, a senior scientist working at the European Union’s Copernicus Atmosphere Monitoring Service (CAMS), […]

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