Scientists discovered the first insects with sex-reversed genitalia in Brazilian caves. Yes, by sex reversed we mean that the female insects have penis-like genitalia and the males have vagina-like ...

WASHINGTON (Reuters) - This may be the role reversal to end all role reversals. Scientists on Thursday described four insect species that dwell in extremely dry caves in Brazil, feed on bat guano and ...

Scientists studied the internal anatomy that make a female-male role reversal possible in a group of Brazilian cave insects. By Jack Tamisiea The penis has a variety of peculiar shapes and sizes: the ...

When you picture a cave, you probably think of an environment devoid of life. But for most caves on Earth, this couldn't be further from the truth. Caves are remarkably good at supporting life.

Islands are already famous for strange wildlife, but their cave systems take isolation to another level. Cut off from sunlight, predators, and sometimes even the open ocean, these underground ...

Ancient animal skulls unearthed in a Caribbean cave have revealed a surprising chapter in bee history. For the first time, ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A precious ancient scarlet-red dye has been identified on ...