Nature

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• • Bacteria deploy umbrella toxins against their competitors

    Bacteria make protein toxins to compete with other bacteria in microbial communities. A study of a common soil bacterium has revealed a previously unknown type of antibacterial toxin that forms a striking umbrella-like structure.

  • Surprise hybrid origins of a butterfly species

    Mating between different species has often been considered an evolutionary dead end, but a study in longwing butterflies suggests that such hybridization could underlie the origins of a new species.

• ArticleOpen Access22 Apr 2024

• DNA glycosylases provide antiviral defence in prokaryotes

  A screen utilizing an environmental DNA library in Escherichia coli is used to identify Brig1, a previously unknown anti-phage defence system with homologues across distinct clades of bacteria.

  • Amer A. Hossain
  • Ying Z. Pigli
  • Luciano A. Marraffini

  ArticleOpen Access17 Apr 2024

• Hybrid speciation driven by multilocus introgression of ecological traits

  Genomic studies of Heliconius butterflies provide evidence that Heliconius elevatus is a hybrid species, and that its speciation was driven by introgression of traits from Heliconius melpomene into the other parent, an ancestor of Heliconius pardalinus.

  • Neil Rosser
  • Fernando Seixas
  • Kanchon K. Dasmahapatra

  ArticleOpen Access17 Apr 2024

• Methane emission from a cool brown dwarf

  Methane emission from a very cool brown dwarf, perhaps arising from an aurora, has been detected in James Webb Space Telescope observations.

  • Jacqueline K. Faherty
  • Ben Burningham
  • Niall Whiteford

  ArticleOpen Access17 Apr 2024

Medical devices in China

Recent government policy changes have encouraged Chinese hospitals to look to suppliers based in China for their equipment and materials.

Spotlight 20 Mar 2024