WARNING: Sexual content. Julius Shields said extraterrestrials first made contact when he was 17 after he spotted glowing ...

Ultrastructure expansion microscopy of murine male germ cells reveals the fine molecular structures of centrioles (shown in ...

Experts worry cheetahs may one day be on the brink of extinction and need artificial reproduction to save them. View on ...

Analysis of the DNA and proteins of a range of animals has revealed that sperm’s molecular toolkit arose in our single-celled ...

Marker says the sperm bank at the Cheetah Conservation Fund she founded in the southern African nation is a “frozen zoo” of ...

Male infertility is a major issue worldwide and its causes remain unclear. Now, an international team of researchers led by ...

A limited necropsy of a 52-ton sperm whale that washed up on Nantucket was conducted Nov. 21. What was found, and where were ...

Know how winter affects male fertility and discover 7 doctor-approved natural ways to boost sperm count, improve motility, ...

One of Trevor Barrett’s excavators and a Robert B. Our tugboat were used to remove the dead sperm whale from Nantucket’s ...

Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

A rare young pygmy sperm whale dies after swallowing a plastic bag: an exceptional case that highlights the alarming impact ...

A polar bear devours a sperm whale on the ice of Svalbard, a scene that reveals how Arctic wildlife is struggling to survive ...