Study finds why many IVF embryos fail to develop

In humans, a fertilized egg is no guarantee of reproductive success. Most embryos stop developing and perish within days of fertilization, usually because they have an abnormal number of chromosomes. Now, researchers at Columbia ...

That lone, craggy gum tree on a farm? It's a lifeline for koalas

Certain eucalyptus trees on farms have added nitrogen due to the fertile soil. Despite dangers, koalas will travel from bushland to reach these trees and feed on their nutritious leaves. Farmers should pay heed to this, the ...

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