New experiments suggest that freezing and thawing on early Earth may have helped primitive cell-like structures grow and ...
The HS-I, CS-I, and CS-II structures of hydrate correspond to the Z, A15, and C15 phases of the Frank-Kasper phase, respectively. With the discovery of HS-I, the primitive structures at the three ...
Feathers are important for birds today, enabling flight, warmth, and communication. Now, researchers from the University of Geneva have traced the origin of feathers. Scientists believe feathers ...
The morphology of gymnosperms the structure and evolution of primitive seed-plants [by] K. R. Sporne
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!15385~!0#focus ...
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