An analysis of 29 prehistoric footprints found on the west coast of Canada have revealed that they are 13,000 years old, making them the oldest known footprints in North America. While older archeological remains have been uncovered elsewhere on the continent, this find adds to the body of evidence that modern humans were present on North America’s west coast well before the end of the last Ice Age, in this case over 2,500 years before the current geological era, the Holocene, began.
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A recent encounter between a human diver and a humpback whale has illustrated how concern for the safety of others can reach across species. Marine biologist Nan Hauser was on an expedition to the South Pacific’s Cook Islands to study whales for a film that she is making. But while diving with a humpback whale, her 25-tonne subject appeared to be attacking her, at least at first. But what she learned after extricating herself from the leviathan’s advances made her see the whole situation in a completely different light.
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On January 3, a group of cybersecurity experts announced the existence of two security flaws affecting virtually every microprocessor on the planet, codenamed ‘Meltdown’ and ‘Spectre’: the Meltdown exploit affects computer processors that were built by Intel over the past decade, used in the majority of consumers’ personal computers, and over 90 percent of the world’s computer servers; Spectre is somewhat less dangerous, but is more widespread, as it affects not only Intel processors, but also those of their main competitor, Advanced Micro Devices (AMD), and Britain’s Advanced RISC Machine (ARM) chips. These vulnerabilities could potentially allow hackers to access personal data from computers, mobile devices, smart TVs, and cloud servers around the world.
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The revised dating and uncovering of new artifacts from an archaeological site in Australia’s Arnhem Land has prompted archaeologists to revise theories as to when the ancestors of present-day Aboriginies first settled in what we now call Australia, pushing that date back by 20,000 years to a point in time 65,000 years ago. This revised timeline also implies that modern humans may have begun the colonization of Asia much earlier than previously assumed.
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