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Fossil found in Israel suggests Homo sapiens left Africa 180,000 years ago

Fossil found in Israel suggests Homo sapiens left Africa 180,000 years ago

Science
Jan. 25 (UPI) -- Scientists believe an ancient human jawbone found in Israel belonged to a Homo sapien. The fossil, dated between 177,000 and 194,000 years old, suggests humans left Africa 50,000 years earlier than previously thought.Last year, scientists found a 300,000-year-old Homo sapien fossil in Morocco. Previously, scientists thought Homo sapiens first emerged 200,000 years ago in East Africa.Until recently, scientists thought modern humans left Africa in a mass exodus around 60,000 years ago, spreading out across Eurasia. Over the last decade, scientists have uncovered evidence that suggests the mass exodus was preceded by earlier, smaller migrations out of Africa, some as far back as 120,000 years ago.The latest discovery -- detailed this week in the journal Science Advances -- pu...
Evidence of convergent evolution found in gene regulation of humans, mice

Evidence of convergent evolution found in gene regulation of humans, mice

Science
Jan. 18 (UPI) -- New research shows humans and mice regulate their genes in similar ways.Because many living organisms face similar problems and ecological pressures, they sometimes develop similar solutions. When species that aren't closely related evolve similar adaptations, it's called convergent evolution.A new study, published this week in the journal PNAS, presents new evidence of convergent evolution among humans and mice. The pair deploy similar mechanisms for regulating noncoding RNA, segments which aren't translated into proteins."This study highlights the importance of noncoding RNA and transposable elements in the regulation of gene expression and in the evolution of gene expression networks in mammalian genomes," Manuel Ares, professor of molecular, cell and developmental biol...
Turpin: Shackled siblings found in Perris, California home

Turpin: Shackled siblings found in Perris, California home

World
Media playback is unsupported on your deviceTwo parents have been arrested in California after police found they allegedly kept their 13 children captive at home, some "shackled to their beds with chains and padlocks".David Allen Turpin, 57, and Louise Anna Turpin, 49, were held on charges of torture and child endangerment.The couple's children - aged two to 29 - lived in Perris, 59 miles (95km) south-east of Los Angeles. Officers were alerted by one of the victims, a 17-year-old girl.The girl - who appeared to be "only 10 years old and slightly emaciated" - on Sunday managed to escape and call the emergency number using a mobile phone found inside the house, the Riverside Sheriff's Department said in a statement.What did police find in the house?Police officers later found "several childr...
Turkey-sized dinosaur found caught in an ancient logjam

Turkey-sized dinosaur found caught in an ancient logjam

Science
Jan. 11 (UPI) -- Paleontologists have discovered a new dinosaur species preserved in an ancient logjam in Australia. The turkey-sized dinosaur offers new insights into the diversity of ornithopods during the Cretaceous period.The newly named species, Diluvicursor pickeringi, was a bipedal herbivorous dinosaur. The small species was found among 113-million-year-old rocks in southwestern Australia."Diluvicursor shows for the first time that there were at least two distinct body-types among closely related ornithopods in this part of Australia," Matt Herne, a researcher at the University of Queensland, said in a news release. "One was lightly built with an extraordinarily long tail, while the other, Diluvicursor, was more solidly built, with a far shorter tail. Our preliminary reconstruction ...
Building blocks of life found on meteorites

Building blocks of life found on meteorites

Technology
The search for aliens has taken another mysterious turn after scientists said they have discovered the essential ingredients for life on ancient meteorites.The space-faring rocks, which at approximately 4.5 billion years old are the same age as the Earth, were found to contain both liquid water and organic compounds.Although the presence of these compounds does not mean the meteorites ever contained life, it does hint at how it may be present elsewhere in the universe.The meteorites, named Zag and Monahans, are believed to have originated from the asteroid belt, between the orbits of Mars and Jupiter.They were examined when they first fell to Earth in Morocco and Texas in 1998, and were found to contain liquid water.Image:Most meteorites burn up in the atmosphere as they crash to Earth. Fi...