A new global climate study warns that the planet is on course to endure nearly two additional months of dangerous, extremely hot days each year by the end of the century. While the findings underscore the intensifying threat of global warming, scientists say international efforts to reduce greenhouse gas emissions since the 2015 Paris Agreement have prevented an even more catastrophic outcome.

Climate Action Has Softened the Blow, Study Finds

According to research released Thursday by World Weather Attribution and Climate Central, global emissions cuts launched over the past decade have significantly reduced projected future heat extremes. Without those interventions, Earth would be heading toward 114 extra superhot days per year. Thanks to current pledges, that number has dropped to 57 additional days on average.

The study used computer simulations and historical temperature data to assess how climate policies have altered the frequency of extreme heat days — defined as days hotter than 90% of comparable dates between 1991 and 2020. Researchers examined global averages and individual country data under two scenarios: one where nations meet their current emission pledges (warming limited to 2.6°C above preindustrial levels), and another where global temperatures rise by 4°C, as was once projected before the Paris accord.

“This reflects both the success and the shortfall of the Paris Agreement,” said Victor Gensini, a climate scientist at Northern Illinois University. “We have slowed the rate of warming, but we haven’t done nearly enough to protect vulnerable regions.”

Heat Waves Intensify: ‘Pain and Suffering’ Ahead

The world has already added an average of 11 superhot days per year since 2015, the study found. These periods of extreme heat are increasingly sending people to emergency rooms and claiming lives, especially in regions with limited infrastructure and healthcare capacity.

“There will be pain and suffering because of climate change,” said Kristina Dahl, Climate Central’s vice president for science and a co-author of the report. “But the difference between 4°C of warming and 2.6°C of warming represents the hard-won progress of the past decade. That gives me hope.”

Friederike Otto of Imperial College London, another co-author, said the rising temperatures will “definitely affect tens of thousands or even millions of people,” adding that thousands already die from heat waves each year.

Researchers estimate that by century’s end, a weeklong southern European heat wave like the one in 2023 will be 70% more likely and 0.6°C (1.1°F) warmer than similar events a decade ago. If global emissions remain on their current trajectory, comparable heat waves could become 3°C (5.4°F) hotter by 2100.

In North America, a heat wave similar to the one that struck the southwestern United States and Mexico in 2024 could be 1.7°C (3.1°F) warmer under current trends.

Climate Inequality: Poorer Nations Hit Hardest

The report’s most striking finding is the imbalance between those most responsible for carbon emissions and those suffering the greatest effects. The 10 countries expected to endure the sharpest increase in superhot days are largely small, low-emitting island or coastal nations — including the Solomon Islands, Samoa, Panama, and Indonesia.

For example, Panama is projected to experience 149 additional superhot days each year, despite contributing just a fraction of global greenhouse gas emissions. Collectively, the top 10 hardest-hit nations produce only 1% of the world’s carbon emissions but will bear nearly 13% of the additional extreme heat days.

By contrast, the world’s top three emitters — the United States, China, and India — are expected to face only 23 to 30 extra superhot days annually, despite being responsible for 42% of the planet’s carbon dioxide emissions.

“This report quantifies what climate scientists have warned for decades,” said Andrew Weaver of the University of Victoria, who was not involved in the research. “The impacts of global warming will fall hardest on developing nations that contributed the least to the problem. This growing inequality will deepen geopolitical tensions.”

Regional Impacts Across the United States

Within the United States, Hawaii and Florida are projected to see the steepest increases in extreme heat days, while Idaho will experience the smallest rise. Even in wealthy nations, the burden will fall disproportionately on low-income and outdoor-working populations, particularly in southern states.

Kristie Ebi, a public health and climate expert at the University of Washington, said the data aligns with peer-reviewed research showing “hundreds of thousands of heat-related deaths in recent years,” much of it driven by human-caused climate change.

A Mixed Picture Before Global Climate Talks

The release of the study comes just weeks before nearly 200 nations gather in Brazil for the next round of United Nations climate negotiations. Scientists and policymakers are preparing to review progress since the Paris Agreement — and to assess whether new commitments can still prevent the worst climate outcomes.

While experts acknowledge that the world has avoided the most extreme warming scenario, they warn that current efforts remain insufficient. “The fact that we’re no longer on the 4-degree path is not a reason for comfort,” said Johan Rockström, director of the Potsdam Institute for Climate Impact Research. “Even 2.6 degrees of warming would mean a disastrous future for billions.”

Source: AP News – The world is heading to add 57 superhot days a year, but study indicates it could have been worse

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A new study warns that dangerous fungi capable of causing deadly infections could rapidly spread across the globe as climate change accelerates — and the world is woefully unprepared.

These fungal threats, often overlooked in public health discussions, are already responsible for an estimated 2.5 million deaths each year. Now, researchers fear the warming planet will open the door for them to thrive in regions that were once inhospitable.

Silent Spreaders: What You Breathe Could Kill You

Fungi like Aspergillus, a common genus found in soil, compost, and water, release millions of microscopic spores into the air every day. Most people inhale them without issue, but for those with weakened immune systems — such as cancer patients, organ transplant recipients, or those with asthma or COPD — the consequences can be deadly.

When the immune system can’t clear these spores, the fungus takes over, growing inside the body — “basically eating you from the inside out,” says Norman van Rijn, a climate and infectious diseases expert at the University of Manchester.

Mapping a Global Threat

Van Rijn and his team used climate modeling to predict how Aspergillus will spread as global temperatures rise. Their findings? Alarming.

• Aspergillus flavus, a fungus that thrives in hot, tropical climates, could expand its range by 16% if fossil fuel emissions remain high. It’s expected to reach parts of North America, northern China, and Russia.
• Aspergillus fumigatus, more common in temperate zones, could see a 77.5% increase in range by 2100, potentially threatening 9 million people across Europe.
• In contrast, regions like sub-Saharan Africa may become too hot for these fungi to survive, disrupting ecosystems that depend on them.

A Medical System That’s Not Ready

The rise of these fungi is particularly dangerous because of limited treatment options. There are only four classes of antifungal medications, and resistance is growing.

Complicating matters, aspergillosis, the disease caused by Aspergillus, is difficult to diagnose. Symptoms like fever and coughing mimic other common illnesses, leading to misdiagnosis or delayed treatment. Mortality rates range between 20% and 40%.

Fungi, Disasters, and Pop Culture Parallels

Extreme weather events — floods, heatwaves, and tornadoes — can also spread fungal spores. After the 2011 tornado in Joplin, Missouri, for example, a sudden outbreak of fungal infections sickened dozens.

Public interest in fungal pathogens has surged recently, thanks to HBO’s hit show The Last of Us, which imagines a post-apocalyptic world overrun by a zombie-like fungal infection. While fiction, researchers hope it sparks awareness of real-life threats.

The Data Gap and the Urgent Need for Action

Experts say there’s a massive lack of data on where dangerous fungi are spreading and who is most at risk. A recent study tracking more than 100 million U.S. patients identified 20,000 cases of aspergillosis between 2013 and 2023 — and it’s rising by about 5% annually.

“We’re just beginning to understand how climate change is fueling this threat,” said Dr. Justin Remais, an environmental health professor at UC Berkeley.

Elaine Bignell, a leading fungal expert at the University of Exeter, echoed this concern. “There is a desperate need to reverse the lack of attention on fungal diseases. Any of us might be affected in the future.”

Source: CNN – A fungi that can ‘eat you from the inside out’ could spread as the world heats up

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The impact of climate change became more evident in 2024, with extreme weather events disrupting lives worldwide. From record-breaking heat to devastating typhoons and droughts, billions faced the harsh realities of a warming planet. This year, which is on track to be the hottest on record, also brought an additional 41 days of dangerous heat due to climate change, according to researchers at the World Weather Attribution (WWA) group and Climate Central.

Heatwaves Scorch Billions

2024 was a year dominated by heatwaves, breaking temperature records on land and in the sea.

Global Impact of Extreme Heat

• Widespread Suffering: Countries from Lebanon to Cambodia faced prolonged heatwaves, increasing the risks of dehydration and heat stroke.
• Vulnerable Populations: Young children, elderly individuals, and those in conflict zones were disproportionately affected, often due to inadequate shelter and disrupted water systems.

Researchers estimate that, compared to a world without climate change, people experienced an additional 41 days of dangerous heat in 2024. Dr. Friederike Otto of WWA highlighted that “the impacts of fossil fuel warming have never been clearer or more devastating.”

Amazon Under Threat

El Niño and Climate Change

The Amazon region faced a deadly combination of a regional heatwave and reduced rainfall, exacerbated by the natural El Niño phenomenon. However, climate change remained the dominant factor:

• Reduced Amazon River Levels: Water levels dropped by 90%, affecting power supply, crop yields, and causing wildfires.
• Human and Ecosystem Impact: Nearly 500,000 children in Brazil and Colombia were affected as schools closed due to a lack of drinking water.
• Global Consequences: Dr. Regina Rodrigues warned that climate change risks pushing the Amazon rainforest to an irreversible, drier state, endangering biodiversity and its role as a carbon sink.

Philippines Faces Unprecedented Typhoons

The Philippines endured a historic typhoon season, with six typhoons striking in just 30 days during October and November. Landslides and floods across Southeast Asia claimed over 1,200 lives.

Climate Change and Storms

While climate change may not increase the number of storms, it likely intensifies their severity. Record ocean temperatures, enhanced by climate change, contributed to this year’s devastating typhoons.

Dr. Zach Zobel of the Woodwell Climate Research Centre noted, “Scientists have been warning about these extreme events for years.”

Hurricanes Devastate the U.S.

The U.S. was hit by two powerful hurricanes, Helene and Milton, leaving 260 dead and causing $115 billion in damages. Elevated ocean temperatures in the Atlantic fueled these storms.

Category Five Hurricane Beryl

Beryl became the Atlantic’s earliest Category 5 hurricane on July 2, underscoring the unprecedented nature of this year’s hurricane season. Dr. Otto explained that the extreme heat in the upper ocean contributed to the persistence of storm activity.

Flooding Wreaks Havoc in Nigeria, Chad, and Sudan

Sudan and Nigeria experienced catastrophic flooding starting in July, triggered by heavy rains that led to dam collapses:

• Deaths and Displacement: Dozens died, and thousands were forced to flee their homes.
• Human-Caused Warming: Researchers linked the heavy rainfall to human-induced climate change, estimating such events will now occur every three to 10 years.

Call for Preparedness and Action

Julie Arrighi of the Red Cross Red Crescent Climate Centre emphasized the need for urgent action:
“We are not well prepared for life at 1.3-1.5°C of warming. Enhancing preparedness for extreme weather is critical to reducing loss of life and damages.”

As 2024 closes, the year serves as a stark reminder of the escalating challenges posed by climate change. Immediate global action is essential to mitigate its impacts and adapt to the “dangerous new era” we are living in.

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