A man wades through an area flooded by heavy rains, in Porto Alegre, Rio Grande do Sul state, Brazil, 3 May 2024. Photo: Carlos Macedo / AP Photo

From flooding in Brazil and Houston to brutal heat in Asia, extreme weather seems nearly everywhere in 2024 – “We’re departing the climate of the 20th century right now and we just can’t handle these events”

By Seth Borenstein, Suman Naishadham, Sibi Arasu, and Fabiano Maisonnave 7 May 2024 (AP News) – In sweltering Brazil, flooding killed dozens of people and paralyzed a city of about 4 million people. Voters and politicians in India, amid national elections, are fainting in heat that hit as high as 115 degrees (46.3 degrees Celsius). […]

Graph showing reconstructed and observed annual temperature data for the Northern Hemisphere’s summer months (June, July, and August) at 30 and 90 degrees north latitude. Anomalies indicate how the average temperature of each year’s summer compared with the average reconstructed temperature from the baseline period of 1850-1900. The summer of 2023 was clearly the hottest in the past 2,000 years, with a temperature that proved to be at least 0.5 degree C above that of C.E.246—a time that was the hottest summer before direct measurements began and long before human-caused warming emerged. Data: Jan Esper, et al., 2024 / Nature. Graphic: Amanda Montañez / Scientific American

2023 was the hottest summer in two thousand years – “When you look at the long sweep of history, you can see just how dramatic recent global warming is”

By Sarah Collins 14 May 2024 (University of Cambridge) – Researchers have found that 2023 was the hottest summer in the Northern Hemisphere in the past two thousand years, almost four degrees warmer than the coldest summer during the same period. Although 2023 has been reported as the hottest year on record, the instrumental evidence […]

Screenshot of a Twitter (X) post showing a photo of Gov. Ron DeSantis signing legislation that erases the words “climate change” from state statutes on 15 May 2024. Photo: Ron DeSantis / UPI

Gov. Ron DeSantis signs law erasing “climate change” from Florida policy – “This purposeful act of cognitive dissonance is proof that the governor and the state legislature are not acting in the best interests of Floridians, but rather to protect profits for the fossil fuel industry”

By Sheri Walsh 16 May 2024 (UPI) – With summer’s extreme heat and this year’s hurricane season rolling into Florida next month, Gov. Ron DeSantis signed legislation Wednesday that will erase climate change from state policy effective 1 July 2024. The new law will erase the words “climate change” from state statutes and make energy […]

Low water levels at the Miguel Aleman dam in May 2024. Photo: Luis Antonio Rojas / The Washington Post

Mexico City’s water “Day Zero” may come even for the wealthiest residents – “No one could have foreseen this would happen in the city”

By Kasha Patel 25 May 2024 MEXICO CITY (The Washington Post) – Raquel Campos’ water issues started in January, when her condo building’s manager sent residents a message saying that the city hadn’t delivered water to its cistern. Four days later, taps in the upscale residence went dry. Campos has lived in the wealthy Polanco […]

Effect of political contributions from oil and gas companies on U.S. legislators that vote against the environment. Coefficients and 95 percent CIs for tests of investment (Left) and influence (Right) hypotheses and their corresponding metaanalytic effects for the years 1992 to 2018. In 13 out of 14 analyses, lower LCV scores (i.e., more antienvironmental votes) in one election cycle predicted significantly increased contributions in the following election cycle. For example, the strongest result was observed for the 2016 election: For every additional 10 percent of congressional votes against the environment in 2014, a legislator would receive an additional $5,400 in campaign contributions from oil and gas companies in 2016 (b = −0.54, SE = 0.12; P < 0.001; 95 percent CI [−0.77, −0.31]). This is an especially strong relationship considering that many elected officials vote against environmental policies nearly 100 percent of the time, thereby compounding the cycle of antienvironmentalism and increasing rewards in the form of contributions. Graphic: Goldberg, et al., 2020 / PNAS

Big Oil spent decades sowing doubt about fossil fuel dangers, experts testify – “Big Oil had to evolve from denial to duplicity”

By Dharna Noor 1 May 2024 (The Guardian) – The fossil fuel industry spent decades sowing doubt about the dangers of burning oil and gas, experts and Democratic lawmakers testified on Capitol Hill on Wednesday. The Senate budget committee held a hearing to review a report published on Tuesday with the House oversight and accountability […]

Residents wade through flood waters after a seasonal river burst its banks following heavy rainfall in Kitengela municipality of Kajiado County, near Nairobi, Kenya, 1 May 2024. Photo: Thomas Mukoya / REUTERS

Kenya flood toll rises to 181 as houses and roads are destroyed – More than 190,000 people forced from their homes – “We have lost nearly all our family members. This is the darkest moment for us.”

NAIROBI, 1 May 2024 (Reuters) – Floods and landslides across Kenya have killed 181 people since March, with hundreds of thousands forced to leave their homes, the government and Red Cross said on Wednesday, as dozens more were killed in neighbouring Tanzania and Burundi. Torrential rain and floods have destroyed homes, roads, bridges, and other […]

Map showing worldwide natural disasters in 2023. Worldwide, natural disasters in 2023 resulted in losses of around US$250 billion (previous year US$250 billion). Loss statistics were characterised by the large number of severe regional storms. Such high thunderstorm losses have never been recorded before in the USA or in Europe: assets worth around US$66 billion were destroyed in North America, of which US$50 billion was insured, while in Europe the figure was US$10 billion (€9.1 billion), of which US$8 billion (€7.3 billion) was insured. A large body of scientific research indicates that climate change favours severe weather with heavy hailstorms. Similarly, loss statistics from thunderstorms in North America and other regions are trending upward. Graphic: Munich Re

Munich Re: Record thunderstorm losses in 2023 – “The warming of the earth that has been accelerating for some years is intensifying the extreme weather in many regions, leading to increasing loss potentials”

9 January 2024 (Munich Re) – Worldwide, natural disasters in 2023 resulted in losses of around US$ 250bn (previous year US$ 250bn), with insured losses of US$ 95bn (previous year US$ 125bn). Overall losses tally with the five-year average, while insured losses were slightly below the average figure of US$ 105bn. Unlike in previous years, […]

Counts (S) of anadromous adults in eight populations of the Santa Monica Mountains BPG. Counts are adjusted by +1 so that zero counts show up on the log scale Graphic: Boughton, 2022 in SWFSC 2022

Steelhead trout, once thriving in Southern California, are declared endangered – “The negative trend toward extinction has not reversed”

By Ian James 23 April 2024 (Los Angeles Times) – Southern California’s rivers and creeks once teemed with large, silvery fish that arrived from the ocean and swam upstream to spawn. But today, these fish are seldom seen. Southern California steelhead trout have been pushed to the brink of extinction as their river habitats have […]

A diver examines bleached coral off the Keppel Islands, Australia, at the southern end of the Great Barrier Reef, 5 March 2024. Photo: Renata Ferrari / AIMS / Reuters

The widest-ever global coral crisis will hit within weeks, scientists say – “Now we’re at the point where we’re in the disaster movie”

By Catrin Einhorn 15 April 2024 (The New York Times) – The world’s coral reefs are in the throes of a global bleaching event caused by extraordinary ocean temperatures, the National Oceanic and Atmospheric Administration and international partners announced Monday. It is the fourth such global event on record and is expected to affect more […]

Effects of experimental open-top chamber (OTC) warming on ecosystem respiration (ER). Experimental warming increased ER across the tundra biome but the magnitude of the response varied across time and space. Effect of OTC warming on ER Hedges’ SMD calculated as (mean ER of the warmed plots − mean ER of the control plots)/pooled standard deviation across the 136 growing season datasets (that is, unique experiment × ER measurement year combinations). On the top of the graph, a blue diamond shows the mean estimate (est. = 0.57 and 95% CI [0.44–0.70], error bars) of the ER response across the 136 datasets, as well as the Q value testing for heterogeneity and P value from the meta-analysis. Black dots represent ER Hedges’ SMDs of individual datasets and 95% CIs (black error bars) in alphabetical and chronological order. Individual datasets are represented by the experiment ID in black (left) and ER measurement year (right) in a colour scale ranging from dark blue, light blue, orange to red which represents increasingly longer warming duration at the time of ER measurements. Experiments with more than 1 year of ER data are grouped. See Supplementary Tables 1, 2 and 4 for details on the datasets and SMD and CI values. The black dashed vertical line (SMD = 0) represents no change in ER with warming whereas the areas to the right and left of it represent increased (SMD > 0) versus decreased (SMD 

Understanding climate warming impacts on carbon release from the tundra – “We anticipate an increase in respiration across the whole Arctic and alpine tundra”

By Sara-Lena Brännström 17 April 2024 (Umeå University) – A team of over 70 scientists from different countries used so called open-top chambers (OTCs) to experimentally simulate the effects of warming on 28 tundra sites around the world. OTCs basically serve as mini-greenhouses, blocking wind and trapping heat to create local warming. The warming experiments […]

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