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Search results for “Ancient Civilizations”

1,000+ results for "Ancient Civilizations"

Ancient antiviral defense system could revolutionize a new class of RNA-based medicine

Researchers discovered an ancient antiviral defense system in human cells that could be used to deliver targeted therapies using engineered viruses or simple self-replicating RNAs. This system, which dates back billions of years, was originally designed to defend against viral infection and may hold the key to new treatments for diseases.

Humanizing, harmonizing effects of music aren't a myth

Research by University of Arizona professor Jake Harwood and collaborators found that listening to music from other cultures improves intergroup attitudes. The study showed that individuals who listen to music produced by outgroup members experience a humanizing effect and reduce negative feelings towards those groups.

SourceUniversity of Arizona·JournalJournal of Communication·DateMay 22, 2017

Researchers investigate evolution of bipedalism in ancient dinosaur ancestors

Researchers discovered that ancient dinosaurs inherited bipedalism from smaller proto-dinosaurs, who developed strong tail muscles. This adaptation allowed early dinosaurs to run faster and for longer distances. However, mammals lost this trait due to the need for burrowing adaptations, which required strong front limbs and short tails.

SourceUniversity of Alberta·JournalJournal of Theoretical Biology·DateMar 3, 2017

Browsing antelope turned ancient African forests into grassy savanna ecosystems

A recent study suggests that the arrival of browsing medium-sized antelopes in Africa was a key factor in replacing ancient forests with open savannas. The researchers found that thorn trees evolved around the same time as antelope, coinciding with the diversification of spiny plants and the opening up of forests to grass invaders.

SourceUniversity of the Witwatersrand·JournalProceedings of the National Academy of Sciences·DateSep 5, 2016

Veins on Mars were formed by evaporating ancient lakes

A new study published in Meteoritics & Planetary Science reveals that mineral veins on Mars were formed by the evaporation of ancient lakes. The research, conducted by scientists from The Open University and University of Leicester, found that the fluids present in Martian Yellowknife Bay were habitable by Earth standards.

SourceUniversity of Leicester·JournalMeteoritics and Planetary Science·DateAug 5, 2016

Every grain of rice: Ancient rice DNA data provides new view of domestication history

Researchers have uncovered evidence of ancient rice DNA, shedding light on the origins of domesticated rice species japonica and indica. The study suggests that indica rice was historically cultivated in East Asia or imported to the region, contradicting traditional assumptions about its exclusive presence in northern parts of East Asia.

Could ancient wheat be the future of food?

Researchers argue that ancient grains like einkorn, emmer, and spelt can be reintroduced to modern markets by creating 'farm to fork' supply chains. These varieties offer unique nutritional profiles and taste experiences, making them attractive to consumers seeking healthier ingredients.

SourceCell Press·JournalTrends in Plant Science·DateJun 27, 2016

Rice and mung beans as archaeological sources

Researchers analyzed crop remains from ancient sites in Madagascar and found a stark contrast between Eastern African and Asian crops. The findings suggest that Southeast Asians brought crops from their homeland to Madagascar, providing insights into the colonization process.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 30, 2016

Cosmic dust reveals Earth's ancient atmosphere

A new study published in Nature found that Earth's ancient upper atmosphere contained about the same amount of oxygen as today, with a methane haze layer separating the oxygen-rich upper layer from the lower, oxygen-starved atmosphere. This challenges the accepted view that Earth's ancient atmosphere was oxygen-poor.

SourceMonash University·JournalNature·DateMay 11, 2016

Are we alone? Setting some limits to our uniqueness

A new paper uses exoplanet discoveries to estimate the probability of advanced life evolving on habitable planets. The authors find that unless the odds are extremely low, humanity is likely not the universe's first technological civilization. They calculate a 'pessimism line' below which human uniqueness would be impossible.

SourceUniversity of Rochester·JournalAstrobiology·DateApr 28, 2016

Ancient DNA shows European wipe-out of early Americans

A recent study published in Science Advances found a striking absence of pre-Columbian genetic lineages in modern Indigenous Americans, suggesting extinction with the arrival of Europeans. The research reconstructed ancient DNA from 92 pre-Columbian mummies and skeletons, revealing a separation that appeared as early as 9000 years ago.

SourceUniversity of Adelaide·JournalScience Advances·DateApr 1, 2016

Identity unearthed

A new study published in American Anthropologist reveals the transformation of Egyptian and Nubian culture through cultural entanglement. The researchers found that individual choices played a significant role in shaping the development of the Nubian state, allowing it to eventually conquer Egypt.

SourceUniversity of California - Santa Barbara·JournalAmerican Anthropologist·DateMar 1, 2016