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In the wrong place at the wrong time

How do we define if a species is native or non-native? Anne Goodenough looks at the challenges ecologists face when deciding what 'belongs' where

Coming of Phage

Western medicine long ago abandoned phage therapy, but it could become a key player in the fight against antimicrobial resistance, explain Timothy Lu and Robert Citorik

Thinking big with nanoparticles

Researchers in Oxford have developed nanoparticles that can deliver genes directly into mammalian sperm in vivo. A powerful tool for investigating infertility, the technique could also revolutionise how transgenic organisms are created, write Lien M Davidson and Kevin Coward

The Biologist63(4) p24-27

Historically, investigations using transgenic model organisms have formed the cornerstone of our advances in understanding the genetic causes of all sorts

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Everlasting life: the ‘immortal’ jellyfish

The supposedly 'immortal' jellyfish Turritopsis dohrnii has captivated scientists since it was discovered decades ago. One of the first researchers to study it, Ferdinando Boero, looks at whether this amazing organism really can live forever

Trouble in paradise

Luís Felipe Toledo and his team investigate why a population of deformed and blind toads are appearing in large numbers on a Brazilian island

'The most invasive ladybird on Earth'

The harlequin has spread across the entire British Isles in just a decade. William Fincham and colleagues look at why this beetle has thrived here