Postmenopausal orcas seem to prevent sons from getting into fights
20 July 2023
Male orcas with a surviving postmenopausal mother have fewer signs of injury than those whose mothers are dead or still reproducing
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Premium
First over-the-counter birth control pill approved in the US
13 July 2023
The US Food and Drug Administration approved the oral contraceptive Opill for use without a prescription. It is the first hormonal contraceptive available over the counter in the US
Male spider mites rip off females’ skin to be first to mate with them
7 July 2023
Due to fierce competition for mates, male spider mites guard juvenile females and forcibly remove their skin as they near adulthood so they can secure the first mating
Crocodiles can reproduce without males – and maybe dinosaurs could too
6 June 2023
An egg laid by a female American crocodile with no access to males developed into a fully formed fetus in the first known case of "virgin birth" in a crocodilian
One-off injection may provide lifetime contraception for female cats
6 June 2023
The long-pursued goal of a permanent, one-dose contraceptive may have been achieved in female cats and it should work in other species too
Male crazy ants have two different sets of DNA in their bodies
6 April 2023
A bizarre mode of reproduction discovered in yellow crazy ants results in males that have two separate sets of DNA in different parts of their body
Freak storms stopped tens of thousands of birds breeding in Antarctica
13 March 2023
Huge snowstorms between December 2021 and January 2022 made Antarctic petrels, snow petrels and south polar skuas abandon attempts at nesting and return to sea
Male birth control drug is 100 per cent effective in mice
14 February 2023
A male contraceptive that immobilises sperm for 2 hours prevented pregnancy in mice and resulted in no adverse side effects
Genetic map of cells linked to endometriosis could improve treatments
9 January 2023
Mapping the cells involved in endometriosis could improve our understanding of how genetics influences the risk of the condition and open the door to new drug targets
Male flies produce a chemical that makes females sleep in after mating
22 December 2022
A “sex peptide” transferred from male to female fruit flies during mating interferes with the female’s biological clock, reducing her chances of mating again
