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5 animals where the male gives birth - nature’s biggest twist

In a world where we instinctively associate childbirth with mothers, nature sometimes tells a different story - not to defy ...
Nature

Cumulative live birth rates of 31 478 untested embryos from 11 463 women challenge traditional recurrent implantation failure definitions

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...