The Guardian Climate Change

And the problem isn’t limited to the region – across the US, nearly a third of new homes are at high risk

The Los Angeles wildfires last month destroyed thousands of homes, killed dozens of people and left a city reeling. They also raised serious questions about the region’s future – and where Americans choose to build.

A rapidly increasing share of US homes are built in areas that are at risk of fire. In 1990, about 13% of new homes were built in places at high risk of fire. By 2020, that number had more than doubled to 31%. The numbers come from ClimateCheck, a for-profit research company that compiles risk by studying trends including rainfall, wind and temperature. But the climate crisis is just one of the reasons that more homes are unsafe.

As wildfires, floods, droughts and record-breaking temperatures have shown, the post-climate change era has arrived. Now we need honesty and action from our leaders

Not yet a quarter of the way into this century and global average temperatures are already 1.75C above the preindustrial average. January 2025 was the hottest on record and has also set a record for the highest yearly minimum global surface temperature, and likely the highest minimum in the past 120,000 years. It is part of a clear pattern. Last year’s global average was 1.6C above the preindustrial – a sobering reality check, given that, only three months ago at the UN Cop29 summit in Baku, Azerbaijan, leaders were still declaring that limiting global temperature rises to 1.5C was within reach.

We are firmly in the post-climate change world now, and the serious implications of this demand honest acknowledgment. The reality is that we are living now in a time of continual disasters that are unfolding alongside our slower, planetary scale disaster. In this riskier time, we need to prepare.

Trend towards more extreme-weather events will continue to hit crop yields and create price spikes, Inverto says

Extreme weather events are expected to lead to volatile food prices throughout 2025, supply chain analysts have said, after cocoa and coffee prices more than doubled over the past year.

In an apparent confirmation of warnings that climate breakdown could lead to food shortages, research by the consultancy Inverto found steep rises in the prices of a number of food commodities in the year to January that correlated with unexpected weather.

Residents in Sierra Madre begin cleanup effort after strongest storm of year sweeps through southern California

Residents of a southern California mountain community near the Eaton fire burn scar dug out of roads submerged in sludge on Friday after the strongest storm of the year swept through the area, unleashing debris flows and muddy messes in several neighborhoods recently torched by wildfires.

Water, debris and boulders rushed down the mountain in the city of Sierra Madre on Thursday night, trapping at least one car in the mud and damaging several home garages with mud and debris. Bulldozers on Friday were cleaning up the mud-covered streets in the city of 10,000 people.

As climate change makes heatwaves more dangerous, here’s how homeowners can mitigate extreme heat

• Change by Degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint
• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

When the summer sun hits the west-facing windows of our 20th floor apartment in Melbourne, my resistance to switching on the air-con soon wilts.

This generally happens about 4pm, soon after we’ve lost access to cheap electricity under our solar sponge tariff.

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Global immunisation programmes are under risk as the US slashes its aid programme and the UK considers cutting funding

It is easy to become so used to scientific and social advances that we take them for granted. But sometimes we should pause to celebrate – to feel genuine awe – at the wonders that we have seen. Amid all the wars, the disasters and the crimes of the last half century, we have witnessed nothing short of a miracle.

Vaccination, in addition to clean water, sanitation and improved nutrition, has been one of the greatest contributors to global health. It is responsible for much of the astounding fall in child mortality, which plummeted by 59% between 1990 and 2022. It has saved more than 150 million lives, mostly of infants, since the Expanded Programme on Immunisation was launched by the World Health Organization in 1974. Initially designed to protect children against diseases including smallpox, tuberculosis, polio and measles, the scheme has since been extended to cover more pathogens. Then, in 2000, came the Global Alliance for Vaccines and Immunisation (Gavi), a public-private organisation that provides financial and technical support for vaccination in poorer countries and negotiates with manufacturers to lower costs.

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Exclusive: Firms outnumber green groups at environmental talks, with related events sponsored by fossil fuel companies

Aviation industry delegates outnumbered those from green groups by 10 to one at the previous conference of the UN’s committee on aviation environmental protection (CAEP), an analysis has found.

Other recent meetings held by CAEP’s parent body, the International Civil Aviation Organization (ICAO), were sponsored by large fossil fuel companies and airlines, including Saudi Aramco and Etihad. Critics accuse the ICAO of having been captured by the industry, resulting in slow efforts to tackle the climate crisis by reducing the carbon emissions from aircraft.

It’s not just eggs, but coffee, orange juice and bacon, making life especially hard for diners, bakeries and brunch spots

Most menu items at the popular Philadelphia breakfast chain Green Eggs Cafe are – true to its name – made with eggs.

Its co-owner Stephen Slaughter said that about 90% of its dishes depend on eggs, ticking off a short list: “Our French toast, our pancake batters, our hollandaise sauce, obviously eggs and omelets.” So when his vendors started charging $8 for a dozen eggs, all six Green Egg Cafe locations felt the pinch.

Experts are split between concerns about future threats and present dangers. Both camps issued dire warnings

I was a technophile in my early teenage days, sometimes wishing that I had been born in 2090, rather than 1990, so that I could see all the incredible technology of the future. Lately, though, I’ve become far more sceptical about whether the technology that we interact with most is really serving us – or whether we are serving it.

So when I got an invitation to attend a conference on developing safe and ethical AI in the lead-up to the Paris AI summit, I was fully prepared to hear Maria Ressa, the Filipino journalist and 2021 Nobel peace prize laureate, talk about how big tech has, with impunity, allowed its networks to be flooded with disinformation, hate and manipulation in ways that have had very real, negative, impact on elections.

Alexander Hurst is a Guardian Europe columnist

Forecast for rising global electricity use likely to stoke fears of rising costs and stalled efforts to fight climate crisis

The world’s electricity use will grow every year by more than the amount consumed annually by Japan because of a surge in electric transport, air conditioning and datacentres, according to the world’s energy watchdog.

The International Energy Agency has raised its predictions for the world’s rising demand for electricity, pegging the growth at almost 4% a year until 2027, up from its previous forecast of 3.4% year.

Research shows move to electric vehicles may not be enough to enable pollution from cars to be eradicated

Microscopic particles emitted from brake pads can be more toxic than those emitted in diesel vehicle exhaust, a study has found.

This research shows that even with a move to electric vehicles, pollution from cars may not be able to be eradicated.

Thirty-five years after she opened it, climate change centre can claim that for every £1 invested, the UK economy benefits by £33

When Margaret Thatcher opened the Hadley Centre for Climate Change in 1990 journalists suggested she was attempting to appear to be doing something about global heating rather than implementing any policies.

Fast-forward 35 years and the Hadley Centre’s science is world-leading and makes the claim that for every £1 invested, the UK economy benefits by £33. This calculation is based on the predictions scientists are able to make, and advice they can then give about incoming weather and its impacts.

Scientists say more-frequent hotter temperatures in west African region are part of reason for reduced harvests and price rises

The climate crisis drove weeks of high temperatures in the west African region responsible for about 70% of global cacao production, hitting harvests and probably causing further record chocolate prices, researchers have said.

Farmers in the region have struggled with heat, disease and unusual rainfall in recent years, which have contributed to falling production.

Bogs and swamps are a colossal carbon store but their continued destruction would blow climate change targets

The world’s peatlands are “dangerously underprotected” despite the colossal amount of climate-heating carbon dioxide already being emitted due to their destruction, a study has warned.

Peatlands occupy just 3% of all land, but contain more carbon than all of the world’s forests. However, farmers and miners are draining the peatlands, releasing so much CO2 that if they were a country, they would be the fourth biggest polluter in the world after China, the US and India.

The marshes in Colombia’s capital are sacred to Indigenous peoples, provide vital wildlife habitats and could help the city adapt to climate change. But after centuries of development they are close to collapse

• Photographs by Antonio Cascio

Early last year, Bogotá faced a prolonged drought, leading to historically low water levels in reservoirs and forcing Colombia’s authorities to impose water rationing. Then, in November, heavy rains triggered widespread flooding, submerging streets, stranding vehicles and disrupting traffic.

People living in neighbourhoods built over wetlands, such as Suba Rincón, suffered a double impact from these extreme events, that served to underscore the city’s vulnerability to deforestation, El Niño and the climate crisis. In these districts people have been left counting the cost of repeated floods.

Website of ‘Doge’ includes information published by thinktank CEI, which claims to fight ‘climate alarmism’

Flanked by Donald Trump in the Oval Office this week, Elon Musk claimed his much-vaunted, but ill-defined, “department of government efficiency” (Doge) was providing “maximum transparency” on its blitz through the federal government.

Its official website was empty, however – until Wednesday, when it added elements including data from a controversial rightwing thinktank recently sued by a climate scientist.

Kathleen Sgamma to oversee Bureau of Land Management, agency that manages quarter-billion acres of public land

Donald Trump has nominated a longtime oil and gas industry representative to oversee an agency that manages a quarter-billion acres of public land concentrated in western states.

Kathleen Sgamma, president of the Colorado-based oil industry trade group Western Energy Alliance, was named Bureau of Land Management director, a position with wide influence over lands used for energy production, grazing, recreation and other purposes. An MIT graduate, Sgamma has been a leading voice for the fossil fuel industry, calling for fewer drilling restrictions on public lands that produce about 10% of US oil and gas.

As AfD says Germany is in grip of ‘eco-dictatorship’, Green party tones down mention of climate action

The crowd had crammed into a concert hall in central Berlin to hear crunch-time election pitches from Robert Habeck and Annalena Baerbock, the high-profile Green ministers in charge of Germany’s economy and diplomacy. But to the surprise of some supporters, it took half an hour for anyone in the environment-rooted party to mention the climate.

Germany’s Greens are fighting to hold on to power after four years in a coalition government where they have been pilloried by other parties, and during which their core issue of climate action has slipped down the political agenda. Though the party is still far from being considered a Volkspartei – a main party whose voters span demographic groups and issues – the Greens have sought to boost their mainstream appeal with talk of beefing up security and bringing down rents and bills.

Greenpeace protest draws attention to worsening typhoons and demands accountability from major polluters

For two days and two nights, Ronalyn Carbonel and her four children clung to the roof of their home as a huge storm raged around them. With the wind battering her village of Rizal, about 10 miles east of Manila in the Philippines, and water swirling through the rooms below them, they had no choice but to wait, hoping that someone would come to rescue them and hundreds of their neighbours.

“We did not have shelter, we did not have food … we just had to wait for the government for two days,” Carbonel said. “It is not easy, no electricity, no light, we just wait for the sun to rise. The children were scared, we had never experienced anything like this.”

Record highs delay start of classes in Rio Grande do Sul, where floods fueled by climate crisis left 180 dead last May

During historic floods last May that left more than 180 dead in Brazil’s southernmost state, Rio Grande do Sul, the water rose to the ceiling of the Olindo Flores school in the city of São Leopoldo, destroying furniture, books and parts of its infrastructure.

When classes resumed more than a month later, its 500 students had to be relocated to another school for months.