An extended period of turmoil in the prehistoric Maya city of Mayapan, in the Yucatan region of Mexico, was marked by population declines, political rivalries and civil conflict. Between 1441 and 1461 CE the strife reached ...
Archaeology
Jul 19, 2022
0
113
Groundwater depletion in regions of India where grain is grown for public distribution is a huge challenge for the country of 1.4 billion people. A new study identifies specific adjustments in the Indian government's procurement ...
Environment
Jul 5, 2022
0
8
A bar of chocolate in the U.S. might have been made in Belgium, with cocoa from the Ivory Coast, almonds from Morocco, vanilla from Madagascar and sugar from Brazil. Were forests cut down for it? Were forced or child laborers ...
Social Sciences
Jul 1, 2022
0
50
In 1977, the Big Ear Radio Telescope at Ohio State University picked up a strong narrowband signal from space. The signal was a continuous radio wave that was strong in intensity and frequency and had many expected characteristics ...
Astronomy
Jun 16, 2022
3
458
Chinese researchers have found a signal that could be from alien civilizations, the country's science ministry is reporting.
Astronomy
Jun 15, 2022
3
161
Astronomers have searched for extraterrestrial civilizations in planetary systems for sixty years, to no avail. In the paper published by International Journal of Astrobiology, Cambridge University Press, and titled "Migrating ...
Astronomy
May 26, 2022
2
246
Voyager 1 is the farthest human-made object from Earth. After sweeping by Jupiter, Saturn, Uranus and Neptune, it is now almost 15 billion miles (24 billion kilometers) from Earth in interstellar space. Both Voyager 1 and ...
Space Exploration
May 26, 2022
1
124
Concrete, with its low cost, good compressive strength, and manufacturing convenience, is one of the most widely used materials in construction. However, with accelerating urbanization, natural aggregates for mixing with ...
Biotechnology
May 24, 2022
0
15
Indonesia is home to the world's third-largest tropical forest area and since 2009 has operated a forest-based climate action project developed by the United Nations Framework Convention on Climate Change (UNFCCC).
Environment
May 19, 2022
0
35
A pair of researchers, one with the Carnegie Institution for Science, the other with California Institute of Technology, has developed a possible solution to the Fermi Paradox. In their paper published in Journal of the Royal ...
