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Exclusive: Beijing, Delhi, Los Angeles and Rio de Janeiro among worst affected, with demand close to exceeding supply
Half the world’s 100 largest cities are experiencing high levels of water stress, with 39 of these sitting in regions of “extremely high water stress”, new analysis and mapping has shown.
Water stress means that water withdrawals for public water supply and industry are close to exceeding available supplies, often caused by poor management of water resources exacerbated by climate breakdown.
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The removal of sulphur from shipping fuels caused ‘a lot of extra sunlight’ to get through atmosphere and hit reef in 2022
Steps to clean up the shipping industry by removing sulphur from fuels intensified a major coral bleaching event on the Great Barrier Reef by allowing more of the sun’s energy to hit the oceanic wonder, according to a new study.
Sulphur pollution can cause respiratory problems for humans and cause acid rain, but it also has a shading effect and can make clouds brighter, providing more shade to areas underneath.
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Researchers say event described as ‘major tipping point’ for clean energy in era of destabilised politics
Wind and solar overtook fossil fuels in the European Union’s power generation last year, a report has found, in a “major tipping point” for clean energy.
Turbines spinning in the wind and photovoltaic panels lit up by the sun generated 30% of the EU’s electricity in 2025, according to an annual review. Power plants burning coal, oil and gas generated 29%.
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Described by one researcher as looking ‘already dead’, the enigmatic creatures are one of the least understood species on the planet
It looks more like a worn sock than a fearsome predator. It moves slower than an escalator. By most accounts, it is a clumsy and near-sightless relic drifting in the twilight waters of the Arctic, lazily searching for food scraps.
But the Greenland shark, an animal one researcher (lovingly) said, “looks like it’s already dead”, is also one of the least understood, biologically enigmatic species on the planet.
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Manual for building design aims to encourage low-carbon construction as alternative to steel and concrete
An airport made of bamboo? A tower reaching 20 metres high? For many years, bamboo has been mostly known as the favourite food of giant pandas, but a group of engineers say it’s time we took it seriously as a building material, too.
This week the Institution of Structural Engineers called for architects to be “bamboo-ready” as they published a manual for designing permanent buildings made of the material, in an effort to encourage low-carbon construction and position bamboo as a proper alternative to steel and concrete.
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It’s not just Tunbridge Wells – a country famous around the world for its rain is in danger of self-imposed drought
You get up and go to the loo, only to find the flush doesn’t work. You try the shower, except nothing comes out. You want a glass of water, but on turning the tap there is not a drop. Your day stumbles on, stripped of its essentials: no washing hands, no cleaning up the baby, neither tea nor coffee, no easy way to do the dishes or the laundry. Dirt accumulates; tempers fray.
The water company texts: we are so sorry; colleagues are working to restore connection; everything should soon be normal. You want to believe them, but the more it’s repeated, the more it becomes a kind of hold music. There’s no supply the next day, and the day after, and the day after that. Each morning brings with it the same chest-tightening question: what will happen today? Buckets and bottles don’t stop you feeling grubby and smelly, or from noticing the taint on your family and friends and neighbours. You’re not quite the people you thought you were and nothing feels normal.
Aditya Chakrabortty is a Guardian columnist
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Experts say big flaw is the lack of mandatory requirements, meaning developers could ignore the guidance
Housing where shops, schools, public transport and possibly pubs are close by, with green spaces and access to nature, and where heritage is preserved, should be the norm for all new developments, according to guidelines set out by the government.
King’s Cross in London, for example, where industrial buildings have been converted into shops, restaurants and public spaces, and where schools and care homes mingle with social and private housing near to a cleaned-up canal and nature reserve, could become the model, according to the new vision.
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Our passion for these cute-looking salamanders means they are everywhere – except in the wild, where the species is under increasing threat
Axolotls are the new llamas. Which were, of course, the new unicorns. Which triggered a moment for narwhals. If you are an unusual-looking animal, this is your time. Even humans who have never seen an axolotl – a type of salamander – in the smooth and slimy flesh will have met a cartoon or cuddly one. Mexican axolotls have the kind of look that is made for commercial reproduction. The most popular domestic species is pink. Some glow in the dark – and their smile is bigger than Walter’s in the Muppets.
At Argos or Kmart, you can buy axolotls as cuddly toys, featured on socks, hoodies and bedding, or moulded into nightlights. You can crochet an axolotl, stick a rubber one on the end of your pencil or wear them on your underpants. The Economist says they’re a “global megastar”. More than 1,000 axolotl-themed products are listed on Walmart’s website. They grace US Girl Scouts patches, McDonald’s Happy Meals, and the 50-peso bill, a design so popular that, last year, the Bank of Mexico reported that 12.9 million people were hoarding the notes.
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A study of Arabidopsis thalianaplants found that plants growing together activated genes to protect themselves, while isolated plants did not
Plants growing close to each other can warn each other about stresses in their lives.
Thale cress (Arabidopsis thaliana) plants were grown on their own or crowded so close together they were touching each other. When all the plants were then stressed with intense light, the isolated plants suffered severe damage, but the crowds of plants were able to cope with the stress. In fact, it just took an hour for the crowded plants to switch on more than 2,000 of their genes that were involved in protecting against a host of different stresses; in contrast, the isolated plants showed little sign of any extra gene activity.
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As Labour shakes up regulation, suppliers are finally investing – but face problems such as contractor shortages and inflation
When a sluice gate failed 24 metres below the water’s surface at Thames Water’s Queen Mother reservoir near London’s Heathrow airport, there were no easy fixes available. Emptying 37m cubic metres (1,307m cu ft) of water was not an option, meaning that helmeted divers were limited to 98-minute stints in the high-pressure environment.
The risky project required a team on a floating platform with a crane to cut out the broken equipment with thermal lances, bolt a plate on to the reservoir wall, and install the new equipment. It took more than a year until last October to complete, according to Glenfield Invicta, the contractor that carried out the work for Thames Water.
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