Embryo Cells Set Patterns for Growth by Pushing and Pulling
Patterns that guide the development of feathers and other features can be set by mechanical forces in the embryo, not just by gradients of chemicals.
Our Genes May Explain Severity of COVID-19 and Other Infections
Researchers are examining the power of subtle genetic weaknesses in the immune system to affect the severity of infectious diseases, including COVID-19.
Ancient DNA Yields Snapshots of Vanished Ecosystems
Surviving fragments of genetic material preserved in sediments allow scientists to see the full diversity of past life — even microbes.
New Brain Maps With Unmatched Detail May Change Neuroscience
A technique based on genetic bar codes can easily map the connections of individual brain cells in unprecedented numbers. Unexpected complexity in the visual system is only the first secret it has revealed.