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Space and astronomy
Researchers in Germany have identified a mouse stem cell population that remains dormant for unusually long periods while retaining the ability to produce all major blood cell types. Whether a comparable population exists in humans remains unknown.
Space and astronomy
Researchers found that the female reproductive structures of Marchantia polymorpha evolved in stages: a stalk that aids spore dispersal came before surface features that help transport water for fertilization.
Space and astronomy
A review involving Umeå University researchers finds that roots and the soil around them may help determine whether Arctic tundra stores carbon or releases greenhouse gases as permafrost thaws.
Space and astronomy
Investigators have not determined why a Learjet crashed near Palm Beach, killing nine people, but federal officials said ice and weather were certainly factors.