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From floods to droughts, erratic weather patterns are affecting food security, with crop yields projected to fall if changes are not made
Experts have warned that the world’s ability to feed itself is under threat from the “chaos” of extreme weather caused by climate change.
Crop yields have increased enormously over the past few decades. But early warning signs have arrived as crop yield rates flatline, prompting warnings of efficiency hitting its limits and the impacts of climate change taking effect.
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The molluscs are decimating food chains in Switzerland, have devastated the Great Lakes in the US, and this week were spotted in Northern Ireland for the first time
Like cholesterol clogging up an artery, it took just a couple of years for the quagga mussels to infiltrate the 5km (3-mile) highway of pipes under the Swiss Federal Technology Institute of Lausanne (EPFL). By the time anyone realised what was going on, it was too late. The power of some heat exchangers had dropped by a third, blocked with ground-up shells.
The air conditioning faltered, and buildings that should have been less than 24C in the summer heat couldn’t get below 26 to 27C. The invasive mollusc had infiltrated pipes that suck cold water from a depth of 75 metres (250ft) in Lake Geneva to cool buildings. “It’s an open invasion,” says Mathurin Dupanier, utilities operations manager at EPFL.
Mathurin Dupanier indicates the water cooling systems that were blocked by the invasive quagga mussels. Photographs: Phoebe Weston/the Guardian; École Polytechnique Fédérale de Lausanne
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Hayling Island, Hampshire: Piles of goose barnacles are stranded on the beach after a long journey hitched on a barrel. They’re fascinating creatures, but they won’t survive long
A message pinged on to my phone – a photo from a friend out walking her dog. Her whippet, head cocked and nose quivering, was investigating a strange object that had washed up on the beach. Later, curiosity got the better of me and, though it was raining heavily, I went down to the shore to see for myself.
The blue drum lay stranded in a fresh seam of shingle, surrounded by storm-tossed debris – cuttlebones, wrack, and a profusion of single-use plastics. But what immediately drew the eye was the living cargo spilling over its sides – a dense aggregation of common goose barnacles (Lepas anatifera), castaways which, as larvae, cling to whatever floats past them – from driftwood and buoys to ship hulls and turtles.
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Forecast is slightly cooler than the record 1.55C reached in 2024, but 2026 set to be among four hottest years since 1850
Next year will bring heat more than 1.4C above preindustrial levels, meteorologists project, as fossil fuel pollution continues to bake the Earth and fuel extreme weather.
The UK Met Office’s central forecast is slightly cooler than the 1.55C reached in 2024, the warmest year on record, but 2026 is set to be among the four hottest years dating back to 1850.
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Spells of unseasonably mild weather are prompting species such as the skylark to burst into song
December is not noted for birdsong in the UK, as most species are more concerned with finding food during the short hours of daylight than preparing for the breeding season to come. Yet during spells of unseasonably mild winter weather some will practice their sweet refrains.
Over the past few weeks I’ve heard several species singing: not quite as forcefully as in the spring, but enough for me to take notice.
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Greece is hoping that protected areas will help keep daytrippers away and allow vulnerable monk seals to return to their island habitats
Deep in a sea cave in Greece’s northern Sporades, a bulky shape moves in the gloom. Someone on the boat bobbing at a distance offshore passes round a pair of binoculars and yes! – there it is. It’s a huge Mediterranean monk seal, one of the world’s rarest marine mammals , which at up to 2.8 metres and over 300kg (660lbs), is also one of the world’s largest types of seal.
Piperi, where the seal has come ashore, is a strictly guarded island in the National Marine Park of Alonissos and Northern Sporades, Greece’s largest marine protected area (MPA) and a critical breeding habitat for the seals. Only researchers are allowed within three miles of its shores, with permission from the government’s Natural Environment and Climate Change Agency.
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Region known as ‘world’s refrigerator’ is heating up as much as four times as quickly as global average, Noaa experts say
The Arctic endured a year of record heat and shrunken sea ice as the world’s northern latitudes continue a rapid shift to becoming rainier and less ice-bound due to the climate crisis, scientists have reported.
From October 2024 to September 2025, temperatures across the entire Arctic region were the hottest in 125 years of modern record keeping, the US National Oceanic and Atmospheric Administration (Noaa) said, with the last 10 years being the 10 warmest on record in the Arctic.
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For often-underfunded non-profits, merch can help raise funds and visibility – here are gifts that support animal conservation, civil liberties and public media
19 unique small business gifts that beat predictable US big brands
Sign up for the Filter US newsletter, your weekly guide to buying fewer, better things
Last year, when my daughter opened her axolotl stuffed animal from her grandmother, I admit I was slightly peeved. Did we really need yet another stuffy? But this one had a purpose: it came from World Wildlife Foundation, a conservation non-profit that sends 85% of proceeds toward conservation work and has a four-star rating on Charity Navigator.
My daughter loved it, and given the state of our climate, I appreciated a gift that supports animal and land conservation.
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Residents of Gloster, Mississippi, are suing plant that exports wood pellets to UK and Europe. Company says it is reducing emissions
When Helen Reed first learned about the bioenergy mill opening in her hometown of Gloster, Mississippi, the word was it would bring jobs and economic opportunities. It was only later that she learned that activity came with a cost: the Amite Bioenergy mill, opened in 2014 by British energy giant Drax, emits large – and sometimes illegal – quantities of air pollutants, including methanol, acrolein and formaldehyde, which are linked to cancers and other serious illnesses.
“When I go out, I can’t hardly catch my breath,” Reed said. “Everything is worse since Drax came here.”
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I had no idea what to do with the injured bird I named Belinda. But suddenly 3,000 Mancunians were happy to help, giving me a whole new appreciation of my home town
The plane pushed through wall after wall of sleet on its descent into Manchester. I’d had a sinking feeling during the flight that only deepened as I shuffled through the terminal. I resented having to be back in the city where I had grown up, after living on the other side of the world for what had felt like a lifetime.
After a few days, I headed out to get a haircut. My mind was miles away, back across an ocean, when I heard something hit the pavement. I looked down to see a pigeon on its back, spatchcocked, and twitching.
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Konzumiranje više sira i vrhnja s visokim udjelom masti može biti povezano s nižim rizikom od razvoja demencije, pokazuju rezultati nove studije Ova studija ne dokazuje da konzumiranje sira i vrhnja s visokim udjelom masti smanjuje rizik od demencije, već samo pokazuje povezanost.
Više od polovice tinejdžerica iskusilo je obilno menstrualno krvarenje, a 40 posto imalo je nedostatak željeza, pokazalo je novo istraživanje provedeno u Švedskoj. Jednako tako, uočen je posebno visok rizik od nedostatka željeza i anemije među djevojkama koje prakticiraju vegetarijansku ili pesketarijansku prehranu.
Jednostavna intervencija na bazi kakaa koja se provodi neposredno prije dugotrajnog sjedenja može pomoći u očuvanju funkcije krvnih žila u rukama i nogama. Ovo ističe praktičnu nutritivnu strategiju za suzbijanje skrivenih kardiovaskularnih rizika modernog sjedilačkog načina života.
Američki znanstvenici identificirali su obećavajući kombinirani pristup liječenju rijetkog, ali opasnog raka mozga u djece koji se naziva atipični teratoidni rabdoidni tumor (ATRT). Reaktivacija i održavanje p53, proteina odgovornog za supresiju tumora, korištenjem lijekova idasantulina i selineksora, dobro se podnosilo, te je smanjilo pterećenje tumorom i povećalo preživljavanje u laboratorijskom modelu.
Proces starenja povezan je s padom imunoloških funkcija i upornom upalom niske razine. Sada su japanski znanstvenici otkrili da je soj Lentilactobacillusa sposoban spriječiti, pa čak i poništiti promjene imunološkog sustava povezane sa starenjem.
Zubna pulpa je osjetljiva na mikrobnu infekciju, što često rezultira upalom, nekrozom i defektima u kompleksu pulpe i dentina. Tradicionalne strategije liječenja pate od višestrukih ograničenja i ne potiču regeneraciju živčanih stanica. U novoj studiji znanstvenici su sada razvili injekcijski kompozitni hidrogel koji sadrži biokeramiku i želatinsko-metakrilatnu matricu s foto-umrežavajućim svojstvima koja potiču neuronsku diferencijaciju i odontogenezu, otvarajući vrata novoj strategiji za popravak kompleksa pulpe i dentina.
Sve je više dokaza da su bolesti desni povezane s povećanim rizikom od kardiovaskularnih događaja, uključujući srčani udar, moždani udar, fibrilaciju atrija, zatajenje srca i kardiometaboličke zdravstvene probleme. Učinkovita prevencija i liječenje bolesti desni, koje se nazivaju i parodontalna bolest, potencijalno bi mogli smanjiti teret kardiovaskularnih bolesti, tvrde rezultati nove studije.
Nova studija otkriva kako kronična prekomjerna konzumacija fruktoze, posebno iz bezalkoholnih pića i ultraprerađene hrane, može tiho oštetiti jetru. Stoga su promjena prehrane i načina života i dalje najmoćniji alati za prevenciju masne jetre.
Analiza 12 studija je pokazala da korisnici e-cigareta imaju 53% veću vjerojatnost od srčanog udara (infarkta miokarda) u usporedbi s onima koji ih ne koriste. Zanimljivo je da se među bivšim pušačima cigareta koji trenutno koriste e-cigarete, vjerojatnost srčanog udara više nego udvostručila. Ovi rezultati izazivaju zabrinutost zbog kardiovaskularne sigurnosti e-cigareta i ukazuju na to da se ne bi trebale smatrati sigurnim alternativama.
Snižavanje razine šećera u krvi prepolovljuje vjerojatnost ozbiljnih srčanih problema kod osoba s predijabetesom, tvrdi nova britanska studija. Naime, vraćanje glukoze u krvi na normalne razine – učinkovito preokretanje predijabetesa – smanjuje rizik od smrti od srčanih bolesti ili prijema u bolnicu zbog zatajenja srca za više od 50%.
