It turns out that ovaries can only remain ovaries by constantly suppressing their ability to become male. Silence a single gene, and adult ovaries turn into testes.
Campbell's monkeys have just six basic types of calls but they have combined them into one of the richest and most sophisticated of animal vocabularies.
An analysis of dung fungus suggests that the disappearance of mammoths, mastodons, and other large animals likely caused dramatic changes in North American plant communities and fire frequency, not the other way around.
A statistical analysis of all of the LB1 fossils suggest that the "hobbit" fossils found in Indonesia were part of a hominin species that branched off from the human line some time in the past.
Faced with similarly pressing fuel demands from their large brains, humans and elephants have developed similar adaptations in a set of genes used in our mitochondria.
