Researchers have discovered Homo sapiens did indeed live and survive in the Kalahari Desert more than 20,000 years ago.
Archaeology
Aug 17, 2022
1
445
Ling Li, an assistant professor in mechanical engineering at Virginia Tech, has found insights into building stronger and tougher ceramics by studying the shells of bivalve mollusks.
Nanomaterials
Jan 6, 2021
0
70
EPFL's Laboratory of Soil Mechanics has developed an easily reproducible technique using bacteria and urea to reinforce sandy or gravelly terrain. A series of chemical reactions lead to the rapid formation of mineral crystals ...
Cell & Microbiology
Jan 23, 2018
0
7
No self-respecting construction engineer would ever choose pure calcite – a weak, brittle mineral found in chalk – as a building material.
Materials Science
May 3, 2016
1
241
Ancient records tell us that the intrepid Viking seafarers who discovered Iceland, Greenland and eventually North America navigated using landmarks, birds and whales, and little else. There's little doubt that Viking sailors ...
Archaeology
Feb 1, 2016
1
197
A rough, whitish block recovered from an Elizabethan shipwreck may be a sunstone, the fabled crystal believed by some to have helped Vikings and other medieval seafarers navigate the high seas, researchers say.
Archaeology
Mar 8, 2013
4
0
(PhysOrg.com) -- The spine of a sea urchin is 99.9% chalk, a very common material forming tiny crystals that are very hard but easy to break apart. Scientists have now discovered how these marine animals use chalk or lime ...
Analytical Chemistry
Feb 14, 2012
0
0
Ancient tales of Norse mariners using mysterious sunstones to navigate the ocean when clouds obscured the Sun and stars are more than just legend, according to a study published Wednesday.
Archaeology
Nov 2, 2011
37
4
(PhysOrg.com) -- Scientists have successfully created synthetic crystals whose structures and properties mimic those of naturally occurring biominerals such as seashells.
Nanomaterials
Sep 6, 2011
1
0
(PhysOrg.com) -- Physicists from the University of Birmingham, with colleagues at Imperial College, London, and Technical University of Denmark, have demonstrated an 'invisibility cloak' that can hide a three-dimensional ...
General Physics
Feb 1, 2011
12
1
