Related topics: stem cells

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 ...

First record of a gall-forming aphid fighting off predator

A researcher reports evidence of a gall-forming aphid defending itself against predators, a first for the species, Mordwilkoja vagabunda. The insects inject saliva into leaf stalks, inducing the plant to form small growths ...

Viruses that could save millions of lives

It may seem strange after a pandemic that has killed millions and turned the world upside down, but viruses could save just as many lives.

Biologists discover new insect species

Its name sounds legendary, but the newly discovered insect Neuroterus (noo-ROH'-teh-rus) valhalla doesn't look or act the part. It's barely a millimeter long and spends 11 months of the year locked in a crypt.

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