While animal eggs await fertilization, their cell cycle needs to be halted. The molecule responsible for this arrest ? the cytostatic factor ? was first described in 1971. But its identity was not ...

Parental egg-care in fish traps them in an evolutionary dead-end through the loss of the chorion-hardening system, according ...

Discover the step-by-step process behind tortoise egg-laying and what happens during the months-long incubation underground.

Bird flu timeline. Jan. 6: A patient in Louisiana died of H5N1 bird flu. The patient was over 65 and was reported to have underlying medical conditions. It is the first U.S. death from an H5N1 ...

A study focused on protecting Scotland's capercaillie population by managing predators through non-lethal means has seen ...

Butterflies (Papilionoidea) come in a remarkable variety of colors and patterns, from the orange-colored majesty of the ...

Linn helps with egg fertilization, embryo selection, assisted hatching and more at Brown Fertility. But this February, she began getting a bit of assistance with the help of artificial intelligence.

It’s hard to overlook the brilliant orange and black wings of a monarch butterfly as it moves through a garden of flowers. It ...