In a breakthrough new study, scientists have created human-monkey chimera embryos for the first time. These chimeras pave the way for more accurate models of human biology and disease, which could ...

Some parts of the human body are in a state of constant regeneration. Liver cells, for example, are replaced every 300 to 500 days. Fingernails grow every day. But this aptitude rapidly declines when ...

The yellow crazy ant, or Anoplolepis gracilipes, has the infamous distinction of being among the worst invasive species in the world. However, this is not the reason for which this particular ant is ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

Scientists injected dozens of human stem cells into developing monkey embryos, and the resulting hybrids survived for up to 20 days in lab dishes. These human-monkey embryos could someday serve as ...

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WASHINGTON — New models for studying the human brain — human neural organoids, transplants, and chimeras — show promise for advancing understanding of the brain and laying the groundwork for new ...