Is this how we got the sperm and the egg?
An ancient sexual conflict over mitochondrial inheritance may be responsible for the evolution of the two sexes as we know them.
Gym-goers are going crazy for these products. It's time for a reality check.
A quail chick hatching.
Have you ever heard chicks peeping in the egg? Have you ever wondered how they manage to take their first breath in the shell?
Eggs containing toxic levels of pesticide, being destroyed at a poultry farm.
Even a fraction of a penny per egg over hundreds of thousands of eggs can mean being able to survive as a business, so the temptation to cut corners is huge.
Free-range egg producers trade heavily on their implied ethical and nutritional value. But what are you really getting?
After Snowdale Holdings was penalised A$1 million for lying about their eggs being free-range, here are some tips on getting what you pay for in the supermarket.
Many people believe free-range eggs are tastier and more ‘natural’.
Many shoppers choose free-range eggs because they think they are tastier and healthier, rather than being motivated purely by concerns for hens' welfare, a new study has found.
Well hello, Dolly.
Photo courtesy of The Roslin Institute, The University of Edinburgh.
In 1997, scientists announced they'd created a healthy sheep cloned from another ewe's mammary gland cell. Two decades on, the technique is being refined and applied to new challenges.
Preconception planning focuses on improving the health of parents to lower the risk of obesity in children.
If you're planning to become a parent, better lifestyle habits can reduce the risk of obesity in your children.
Victorian mores influenced ideas not just about men and women but animals too.
Joseph Christian Leyendecker
Victorian attitudes influenced what scientists thought they were observing about sexual behaviors in the animal world. But modern techniques reveal the myth for what it is.
Yolanda Güse protesting outside a McDonald’s branch in Cape Town.
It doesn't happen often that a multinational will blink when taken on by an individual. But a passionate campaigner's successful crusade has shown how it can be done.
What is a good life for an egg-laying hen?
Voters in Massachusetts passed a ballot measure that assumed so. But a philosopher of animal welfare suggests the ethical issues involved are trickier than a yes/no vote would suggest.
The egg collected in the Central Tanami Desert, Northern Territory, in October 1983.
For more than three decades an egg found in a remote Australian desert was thought to be from a rare nocturnal parrot. So what happened when scientists decided to double-check?
There’s a battle for resources going on in there.
Embryos greedily want more resources than their fair share. New research investigates how early in evolution their hormonal tactics arose.
Unfortunately women only have the eggs they’re born with.
Most women will have been made aware they have a ticking biological clock. But most probably don't know it's because women are born with a limited supply of eggs, and eventually they will run out.
Eggs cartons will need to show stocking density on the carton.
Egg image from www.shutterstock.com
New standards for free-range eggs will limit stocking densities and mean hens must have access to outdoors.
Should parents be allowed to select the sex of their child through IVF when there’s no compelling medical reason to do so?
The National Health and Medical Research Council call for public submissions on whether sex selection should be allowed without a medical reason recognises changing social attitudes.
They’re coming to get you.
Centers For Disease Control and Prevention
What would you do if a zombie apocalypse occurred? I recommend going to the Centers for Disease Control’s (CDC) zombie website for information. It is incredible (see it here). While the zombie website…
Thanks to IVF and donor conception, infertile couples, single women and lesbian couples now have a better chance at starting families. But how does it all work? Ask the experts here.
When cells divide, sometimes chromosomes don’t wind up where they need to go.
Embryo via www.shutterstock.com.
Aneuploidy – when a cell has an irregular number of chromosomes – is a major cause of pregnancy loss. Scientists may have uncovered a gene that increases the risk of aneuploidy.
Native Australian bronze-cuckoos trick other cuckoos as they compete to take over other birds’ nests. Australian National…