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PaleontologyEarly Mammal’s Jaw Lost Its Groove
A tiny fossil skull found in 195-million-year-old Chinese sediments provides evidence that crucial features of mammal anatomy evolved more than 45 million years earlier than previously thought.
By Sid Perkins -
Materials ScienceNanotubes form dense transistor array
Researchers have made an array of transistors out of carbon nanotubes.
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Materials ScienceFuture brightens for carbon nanotubes
Researchers have made a lightbulb that depends on carbon nanotubes for its glow.
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Health & MedicineGender bias: Stroke after heart surgery
Women are more likely than men to suffer strokes after heart surgery.