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Evolution is often said to be "blind," because there's no outside force guiding natural selection. But changes in genetic material that occur at the molecular level are not entirely random, a new study suggests. These mutations are guided by both the physical properties of the genetic code and the need to preserve the critical function of proteins, the researchers said.
Could cancer be our cells’ way of running in “safe mode,” like a damaged computer operating system trying to preserve itself, when faced with an external threat? That’s the conclusion reached by cosmologist Paul Davies at Arizona State University in Tempe (A.S.U.) and his colleagues, who have devised a controversial new theory for cancer’s origins, based on its evolutionary roots. If correct, their model suggests that a number of alternative therapies, including treatment with oxygen and infection with viral or bacterial agents, could be particularly effective.
A “perfect storm” of urban change that began in 1920s Kinshasa led to the catastrophic spread of HIV across Africa and into the wider world, according to scientists who used genetic sequencing and historical records to trace the origins of the pandemic.
Dracula might be a fictional character, but archaeologists believe they've found the haunts of Vlad the Impaler--the real-life figure who inspired Bram Stoker's vampire tale.
In the latest exciting archaeological find in Egypt, the remains of a city, which is widely suspected to be from the Roman era, has been uncovered under a layer of silt in the Nile.
From the mouth of a cave high in the Andes, Kurt Rademaker surveys the plateau below. At an altitude of 4,500 metres, there are no trees in sight, just beige soil dotted with tufts of dry grass, green cushion plants and a few clusters of vicuñas and other camel relatives grazing near a stream.
Stop Press - Latest News From The Excavations At Gunung Padang, The Mysterious Ancient Pyramid In Indonesia That Is Rewriting History
That’s right, the U.S. isn’t dismantling its old nuclear weapons, because we might need them to destroy an asteroid hurtling toward earth. To clarify some of the bureaucratic language above, NNSA is the “National Nuclear Security Administration”; CSAs are “canned subassemblies” that contain highly enriched uranium for use in nuclear weapons. And senior-level government evaluation means that somewhere in government, there is contingency planning going on around what to do in the event of an asteroid heading toward earth.
Ongoing pro-democracy protests in Hong Kong have drawn tens of thousands of citizens, taking to the streets, demonstrating their opposition to news that China will choose the candidates for the upcoming 2017 election.
Has a team of Chilean scientists finally put an end to the decades-long debate over how birds evolved from dinosaurs? Well, not entirely. But they have clarified some critical details about one small but significant part: the wrist.
What if that sexual partner you'd rather forget remained forever a part of your life?
Related: Previous Sex Partners' Semen Can Influence Fly Offspring
Scientists are using pulsed light to remove allergens from peanuts in the hope that most people will be able to eat them safely.
Not all rainbows are as colorful as their reputation suggests. There are some spectacular monochrome rainbows, when the conditions are right. The cooler shades drop out of the rainbow, leaving bands of yellow, orange, and red. Sometimes the rainbow narrows down to a bright red streak of light.
The gigantic, remote Tibetan plateau is being flooded with sensors in an unprecedented attempt to understand its influence on climate — especially the Asian monsoons, which caused deadly flooding in India and Pakistan in September. The US$49-million Chinese effort could help to predict extreme weather — both in Asia and as far afield as North America — and give scientists a steer on how climate change affects these events.
It’s not hard to speculate; long before modern roads crisscrossed our landscape, before carriage roads, wagon roads and railroads existed, when nothing but a network of foot paths connected important places, some of these paths may have held a very particular importance themselves. Many were probably used by ancient populations as transportation routes and corridors from village to village, connecting important renewable resources or from waterway to waterway, acting as portages for light craft. Others may have been used for more ceremonial purposes and aligned with celestial events such as equinox and solstice sunrises and sunsets. Could some of these original pathways still exist and be discernable today? Well, the answer is yes.
See also: Happy Autumnal Equinox! by Walter Cruttenden for GrahamHancock.com
A massive feature on the moon formed due to lunar rifts, in a surprise revision to earlier theories, research shows. Previously, scientists thought the moon's Ocean of Storms was a round crater left after a giant impact, but now researchers have found it is underlain by a giant rectangle created by cooling lunar lava as the moon formed.
Related: Solving the mystery of the 'man in the moon': Volcanic plume, not an asteroid, likely created the moon's largest basin
A giant cloud that covers the south pole of Titan, Saturn's largest moon, has a surprisingly poisonous nature: It's made of cyanide. The giant cloud, first spotted by NASA's Cassini spacecraft in 2012, is the size of Egypt and covers Titan's south pole.
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