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Science

  • A man walking his dog along a path covered autumn leaves in a park

    Alzheimer's
    Walking 3,000 or more steps a day may slow progression of Alzheimer’s, study says

    Scientists find even modest amounts of exercise appear to delay brain changes and cognitive decline in patients

  • Science Weekly
    ‘We must change course’: a stark climate warning from the UN chief

    Podcast15:54
  • A man on horseback silhouetted by the moon

    Starwatch
    Look out for the largest supermoon of the year on Wednesday

  • A person walking their dog along Scarborough beach at sunrise in winter.

    Mental health
    How scientists are shining light on the biology behind seasonal affective disorder

  • Today in Focus
    The multi-million pound baby powder case

    Podcast22:55

News

  1. Dry riverbed in Sahel area

    Solar geoengineering in wrong hands could wreak climate havoc, scientists warn

  2. Mpox vaccine

    US public health officials vigilant as newer mpox variant detected

  3. Rear view of person walking amid autumn trees in Epping Forest, UK

    Britain one of least ‘nature-connected’ nations in world – with Nepal the most

  4. Honey fungus on tree base covered with ivy and moss

    Hot summer and damp autumn cause UK boom in destructive honey fungus

Opinion

  1. Arwa Mahdawi

    Am I a type A personality - and should I care?

    Arwa Mahdawi
  2. Rich Pelley

    I was happy to drop my pants for medical science (and money). Come on, gen Z – it’s your turn

    Rich Pelley
  3. Pioneering eye device restores reading vision to blind eyesUndated handout photo issued by Moorfields Eye Hospital of eye patient Sheila Irvine, from Wiltshire being trained after having a new electronic eye implant that enables people who have lost their sight to geographic atrophy (as a result of dry AMD) to read and therefore write again. The device electronically bypasses the retina to send visual signals direct to the brain via the optical nerve. Issue date: Monday October 20, 2025. PA Photo. Photo credit should read: Moorfields Eye Hospital/PA Wire NOTE TO EDITORS: This handout photo may only be used for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder.

    The Guardian view on electronic implants: a new way of seeing, not of being

  4. A health worker wearing a colourful headscarf and blue latex gloves squeezes a dose of the vaccine into an older woman's mouth as others look on from a queue beside her.MSF is involved in the fight against cholera in Adré, Aboutenge, Metché, Irdimi, Tulum, Tiné, Hadjer Hadid, Allacha, Goz Beida and Abdi through vaccination, cold chain management, active case finding, health promotion, soap distribution, water supply and water network rehabilitation, and the establishment of several cholera treatment units and centres.

    Cholera is spreading fast, yet it can be stopped. Why haven’t we consigned it to history?

    Hakainde Hichilema and Tedros Adhanom Ghebreyesus

Science Weekly podcast

  1. A vintage teapot pouring tea into a vintage teacup
    Science Weekly

    A Scottish tea mystery: the list – episode two

    Podcast
  2. Tea plants
    Science Weekly

    A Scottish tea mystery: green shoots – episode one

    Podcast
  3. An eye patient takes part in a test at hospital.
    Science Weekly

    The ‘remarkable’ implant that can restore sight – podcast

    Podcast

Key issues

  • Chen-Ning Yang with Richard Feynman

    Physics
    Chen-Ning Yang obituary

  • A man's eye

    Biology
    AI study gives insights into why super-recognisers excel at identifying faces

  • Man puts hands to side

    Space
    Trump reverses course to renominate billionaire Musk ally to lead Nasa

  • NFL great Tom Brady became a minority owner of Birmingham City in 2023.

    Genetics
    NFL great Tom Brady says his dog is a clone of family’s deceased pit bull mix

Alex Bellos's Monday puzzle

  • Young latin man shrugging shoulders expressing doubt and confusion on blue backgroundUncertain young man shrugging with a confused expression, unsure about something, against a vibrant blue backdrop

    Alex Bellos's Monday puzzle
    Did you solve it? Wordplay wizardry by the UK’s king of quiz

  • Portrait of beautiful woman who do not understand what is happening. Isolated pink background.

    Alex Bellos's Monday puzzle
    Can you solve it? Wordplay wizardry by the UK’s king of quiz

  • Black Cab on a cobbled street in London. DSC 5516

    Alex Bellos's Monday puzzle
    Did you solve it? The London cab that rode into history

  • BRITAIN-TRANSPORT-TAXIA London black taxicab is driven along a street in central London on March 22, 2017. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)

    Alex Bellos's Monday puzzle
    Can you solve it? The London cab that rode into history

Multimedia

  2. Mallow pollen germinating on stigma while being parasitised by a filamentous fungus

    Magnifying the minuscule: Nikon Small World photomicrography 2025 – in pictures

    Gallery20

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