Burrow extension by crack propagation
Article Abstract:
Burrowers can progress through impeding, muddy, and cohesive sediments by using a mechanically efficient, previously unsuspected mechanism crack propagation in which an alternating anchor system of burrowing serves as a wedge to extend the crack-shaped burrow. The force required to propagate cracks through sediment in this way is relatively small.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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The reluctant celebrity
Article Abstract:
A reclusive Russian, Grigory 'Grisha' Perelman, claims to have proved a geometrization conjecture, a theory that is crucial for understanding the three-dimensional surfaces. Perelman's reaction to the acclaim generated by his work is discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
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