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Life

Invasive Burmese python in Florida lays a record 96 eggs in one go

A female Burmese python – an invasive species in the US – has laid a clutch of 96 eggs in one go, almost double the average for these snakes

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An Antarctic petrel

Life

Freak storms stopped tens of thousands of birds breeding in Antarctica

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Changes to surrogacy laws must consider future reproductive technology

Health

Changes to surrogacy laws must consider future reproductive technology

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Sperm view under microscope, spermatozoa background, vector illustration eps10

Health

Male birth control drug is 100 per cent effective in mice

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Two orcas

Life

Orca mothers forgo future offspring to care for their full-grown sons

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Polycystic ovary syndrome

Health

A better understanding of PCOS offers fresh hope for new treatments

Features

Abdominal pain is a common endometriosis symptom

Health

Genetic map of cells linked to endometriosis could improve treatments

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Fruit fly

Life

Male flies produce a chemical that makes females sleep in after mating

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Fewer than expected boys were born in England and Wales three months after lockdown was introduced

Health

Fewer boys born in England and Wales in early stage of the pandemic

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Clusters of sperm

Life

Sperm move in packs like cyclists to push through thick vaginal fluid

In mock-ups of the female reproductive tract, bull sperm cluster in groups of two to four, which seems to help them swim upstream

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Life

Australian seagrass has cloned itself to cover 180 kilometres of coast

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Health

Rat pups born from sperm artificially produced from stem cells

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Life

Female wētā insects have two sets of genitals and eat male ejaculate

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Health

Male contraceptive pill is safe and effective in tests in mice

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