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Articles on Eggs

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Getting the job done. A female Asian water dragon (Physignathus cocincinus) produced a daughter (left) without the assistance of a male. Skip Brown/Smithsonian’s National Zoo

Virgin births from parthenogenesis: How females from some species can reproduce without males

Parthenogenesis, a form of reproduction in which an egg develops into an embryo without being fertilized by sperm, might be more common than you realized.
Yolks are a great source of vitamins, minerals, fats and proteins packaged up by the female animal for an embryo. Emily Nunell/The Conversation CC-NY-BD

Curious Kids: why do eggs have a yolk?

A yolk allows a developing animal to stay in an egg longer, boosting its chance of survival. The downside is the mother has to work hard finding extra food so her body can create a nutritious yolk.
There are concerns that the new draft poultry standards don’t truly have chickens’ welfare at heart. Ben Romalis/Shutterstock.com

Governments can’t be trusted to deliver welfare standards for chickens

The current review of standards for egg and poultry farming does little to assuage fears that the industry wields too much influence. Only an independent regulator can restore public confidence.

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