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Redaktionellt bearbetade vetenskapsnyheter — 3195 artiklar

Så mycket eklandskap krävs för att rädda hotade arter
<p><img width="1024" height="576" src="https://forskning.se/app/uploads/2026/06/Ek-naturreservat-1024x576.jpg" class="attachment-large size-large wp-post-image" alt="Mäktig ek i ett naturreservat" decoding="async" fetchpriority="high" srcset="https://forskning.se/app/uploads/2026/06/Ek-naturreservat-1024x576.jpg 1024w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-300x169.jpg 300w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-768x432.jpg 768w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-1536x864.jpg 1536w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-850x478.jpg 850w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-310x174.jpg 310w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat-1102x620.jpg 1102w, https://forskning.se/app/uploads/2026/06/Ek-naturreservat.jpg 1920w" sizes="(max-width: 1024px) 100vw, 1024px" /></p> <p>Eken &#xE4;r det tr&#xE4;dslag som hyser st&#xF6;rst biologisk m&#xE5;ngfald i Sverige, med omkring 1 800 arter knutna till sig. Men eklandskap och naturbetesmarker minskar, vilket hotar m&#xE5;nga arters &#xF6;verlevnad. Forskare vid Link&#xF6;pings universitet har nu tagit reda p&#xE5; hur stora och sammanh&#xE4;ngande dessa milj&#xF6;er beh&#xF6;ver vara f&#xF6;r att s&#xE4;kra den biologiska m&#xE5;ngfalden p&#xE5; l&#xE5;ng sikt. [&#x2026;]</p> <p>The post <a href="https://forskning.se/2026/06/22/sa-mycket-eklandskap-kravs-for-att-radda-hotade-arter/">Så mycket eklandskap krävs för att rädda hotade arter</a> appeared first on <a href="https://forskning.se">forskning.se</a>.</p>
Is it true that … beards are unhygienic?
<p>People assume that those with facial hair are more likely to harbour bacteria on their faces than the clean-shaven – but the truth is more tangled</p><p>The idea that beards are dirtier than clean-shaven faces has been floating around for decades, says John Tregoning, professor of vaccine immunology at Imperial College London. There is even research that&nbsp;shows people perceive bearded men as&nbsp;less hygienic: one study found&nbsp;<a href="https://link.springer.com/article/10.1007/s11628-017-0346-5">restaurant customers rated</a> waiters with facial hair as dirtier. Science doesn’t necessarily back that&nbsp;up,&nbsp;though.</p><p>One of the earliest studies on the subject, <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC547091/">published in 1967</a>, looked at&nbsp;how much bacteria could be recovered from men’s faces after being artificially sprayed on to&nbsp;their skin. Researchers compared washed and unwashed faces, both with and without beards. The dirtiest combination wasn’t with a beard: most&nbsp;bacteria was recovered from unwashed clean-shaven faces, followed by unwashed bearded faces, washed bearded faces and finally washed clean-shaven faces.</p> <a href="https://www.theguardian.com/lifeandstyle/2026/jun/22/is-it-true-that-beards-are-unhygienic">Continue reading...</a>
Can you solve it? Dotty data and silly sentences
<p>When numbers and sounds are not what they seem</p><p>Today’s puzzles – and prize draw! – are about different types of deception.</p><p><strong>1. Super syllabus</strong></p> <a href="https://www.theguardian.com/science/2026/jun/22/can-you-solve-it-dotty-data-and-silly-sentences">Continue reading...</a>
Månen behöver egen tidszon
Kratrarna vid månens sydpol är några av solsystemets allra mörkaste och kallaste platser. Där vill forskare nu placera en laser som ser till att klockan går rätt på månen. – Tid är oerhört viktigt för ett modernt samhälle. Både för att vi ska kunna hålla reda på våra möten, och för kommunikation och navigation, säger Jun Ye vid den amerikanska mätmyndigheten NIST.
‘Slug sleuth’ farmers in England help develop prediction tool to cut back on pesticide use
<p>Maps created as part of Defra-funded Slimers project allowed test growers to halve amount of slug pellets used</p><p>Farmers believe they have a new weapon in their age-old battle against the slugs that destroy their crops: modern technology.</p><p>Slug prediction maps, which have been created by computer models as part of an research project, are now helping growers to better target the use of pesticides, saving them money and reducing environmental harm.</p> <a href="https://www.theguardian.com/business/2026/jun/21/slug-sleuth-farmers-england-prediction-tool-reduce-pesticide-use">Continue reading...</a>
How becoming a dad changes men’s brains
<p>Fathers show changes in some of the same brain areas as mothers, but the effect of parenthood on dads isn&rsquo;t nearly as well studied</p>
‘A child goes to bed and doesn’t wake up’: the families left in shock after the sudden death of their healthy children
<p>Sudden cardiac arrest is statistically rare but among the leading causes of death for children and young people. And families often have no idea of the risk until it’s too late</p><p>Before Alexandra Thoms goes to sleep, she puts together a flat-pack dining table with her father, Gordon. She needs the table for her otherwise sparse two-bedroom Melbourne apartment which she has moved into just weeks earlier.</p><p>At 23, Alexandra has met the milestones of an ambitious life at lightning speed. She is well travelled, has earned a double university degree and a graduate job at Deloitte. She is healthy; an avid skier and gymgoer. Now, she is also a homeowner. She didn’t have a formal housewarming, though, as most of her friends still live at home.</p> <a href="https://www.theguardian.com/australia-news/ng-interactive/2026/jun/21/sudden-cardiac-arrest-leading-cause-death-young-people">Continue reading...</a>
‘It’s not science, it’s coercion’: health experts decry RFK Jr order on hantavirus quarantine
<p>Kennedy overrides CDC order saying an American who came into contact with hantavirus can self-quarantine </p><p>The Trump administration is employing “authoritarian” and “unconstitutional” quarantine measures for at least one person who came into contact with a hantavirus patient, health law experts say.</p><p>The mandatory quarantine, reimposed without an offering scientific evidence, reveals how the US might approach future cases of Ebola and other pathogens in the US – and sets a precedent for detaining Americans with no scientific rationale.</p> <a href="https://www.theguardian.com/world/2026/jun/20/rfk-jr-hantavirus-quarantine">Continue reading...</a>