Bioscientist Anne Villacastin is using genetics to supercharge the growing power of sorghum, a cereal plant that humans have been cultivating for millennia. By adding genes from wheat, Villacastin and her colleagues at the ...
Biotechnology
Nov 16, 2023
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13
Shale, the source of the United States' current natural gas boom, could help solve another energy problem: what to do with radioactive waste from nuclear power plants. The unique properties of the sedimentary rock and related ...
Energy & Green Tech
Mar 17, 2014
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1
In remote caves of the Pyrenees, lie precious remnants of the Ice Age undisturbed: foot and hand prints of prehistoric hunters. The tracks have remained untouched for millennia and are in excellent condition. Dr. Tilman Lenssen-Erz ...
Archaeology
Jun 4, 2013
1
0
Researchers at the University of Adelaide have found that a lake on an island off the coast of Queensland has been relatively untouched by changes in climate for the past 7000 years, and has so far also resisted the impact ...
Environment
Jun 4, 2013
4
0
An international team of researchers has decoded the genome of a creature whose evolutionary history is both enigmatic and illuminating: the African coelacanth. A sea-cave dwelling, five-foot long fish with limb-like fins, ...
Biotechnology
Apr 17, 2013
11
0
In 15 years of teaching, University of Pennsylvania classicist Peter Struck has guided perhaps a few hundred students annually in his classes on Greek and Roman mythology through the works of Homer, Sophocles, Aeschylus and ...
Social Sciences
Nov 19, 2012
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0
(Phys.org)—Surface-dwelling algae adjust their biochemistry to surface temperatures. As they die and sink to the bottom, they build a sedimentary record of sea-surface temperature across millennia. Brown's work on surface ...
Earth Sciences
Sep 28, 2012
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1
How much carbon is stored in the organic soils of tropical wetlands is becoming an important question as erosion, agriculture, and global climate change slowly set into motion a series of processes that could potentially ...
Earth Sciences
Sep 20, 2012
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0
While Curiosity is definitely loaded up with some of the most high-tech instruments ever made to investigate the surface of Mars, it also carries a very low-tech instrument: a sundial, which can be used to determine the position ...
Space Exploration
Aug 23, 2012
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0
The remains of the world's oldest musical instruments and human figurines suggest that music and artistic depictions of the human form may have first developed in Germany around 40,000 years ago, say researchers.
Archaeology
May 29, 2012
6
0
A millennium (plural millennia) is a period of time equal to one thousand years (1,000)—from the Latin phrase mille, thousand, and annus, year—often but not necessarily related numerically to a particular dating system.
For example, a millennium could start at the beginning of the year 289 and finish at the beginning of the year 1289.
Sometimes, it is used specifically for periods of one thousand years that begin at the starting point (initial reference point) of the calendar in consideration (typically the year "1"), or in later years which are whole number multiples of a thousand years after it. The term can also refer to an interval of time beginning on any date. Frequently in the latter case (and sometimes also in the former) it may have religious or theological implications (see millenarianism). Sometimes in religious use, such an interval called a "millennium" might be interpreted less precisely, i.e., not always being exactly 1000 years long.
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