Human extinction? It could happen, but it doesn’t have to.
Category: existential risks – Page 56
Should we send messages into space in an effort to contact intelligent extra-terrestrial civilizations? Or should be fear them attacking us and transmit nothing? Two conflicting and oft-heard questions, but it turns out we may overlooking something rather important and completely obvious— it’s probably us that are the malicious aliens.
When I read that we’ve got more chance of being struck by a planet-killer asteroid than being invaded by aliens, I was intrigued.
So I got in touch with Alberto Caballero, the author of the though experiment-style paper published this week, to find out more. His paper is an attempt to determine how many malicious extraterrestrial civilizations there could be, and how likely it is that they would invade us.
The asteroid will zoom safely past Earth at 47,200 miles per hour.
The near-Earth asteroid 7,335 (1989 JA) will make a close approach to our planet on May 27, 2022, flying within about 2.5 million miles of Earth.
An international team which includes University of Manchester scientists has for the first time demonstrated that nerve signals are exchanged between clogged up arteries and the brain.
The discovery of the previously unknown electrical circuit is a breakthrough in our understanding of atherosclerosis, a potentially deadly disease where plaques form on the innermost layer of arteries.
The study of mice found that new nerve bundles are formed on the outer layer of where the artery is diseased, so the brain can detect where the damage is and communicate with it.
A new study is revealing that a reversal in the Earth’s magnetic poles 42,000 to 41,000 years ago may have led to environmental crises that resulted in mass extinctions. The period is called the Laschamps excursion and the research used precise carbon dating obtained from ancient tree fossils to study its effects.
The team details how they created a precise radiocarbon record around the time of the “Laschamps geomagnetic reversal about 41,000 years ago from the rings of New Zealand swamp kauri trees.”
“This record reveals a substantial increase in the carbon-14 content of the atmosphere culminating during the period of weakening magnetic field strength preceding the polarity switch.” The team concluded that the “geomagnetic field minimum caused substantial changes in atmospheric ozone concentration that drove synchronous global climate and environmental” with their model investigating the consequences of this event.
Can humanity last another 400,000 years? We might have to if we want to talk to another technological civilization.
If there are so many galaxies, stars, and planets, where are all the aliens, and why haven’t we heard from them? Those are the simple questions at the heart of the Fermi Paradox. In a new paper, a pair of researchers ask the next obvious question: how long will we have to survive to hear from another alien civilization?
Their answer? 400,000 years.
An exploration of some Fermi Paradox related reasons that it’s highly unlikely that we are the only intelligent life in the universe.
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In our global struggle to deal with COVID-19 and the existential threat that is climate change, there is a growing anti-intellectual, anti-science movement afoot.
Is 21st-century civilization following Rome and China as we turn to disinformation delivered by the technologies science has fostered?
James McCall SpringerHmmm… So quantum computing systems aren’t close to being perfected BUT they’re being used for ransomware attacks?
Is “bleepingcomouter” a bs sensationalist media producer like Futurism?
Len Rosen shared a link.
The “special operation” as Russia calls it has come with a threat of nuclear war, and consequences for food and energy security for many.