How a handful of prehistoric geniuses launched humanity’s technological revolution
For the first few million years of human evolution, technologies changed slowly. Some three million years ago, our ancestors were making chipped stone flakes and crude choppers. Two million years ago, hand-axes. A million years ago, primitive humans sometimes used fire, but with difficulty. Then, 500,000 years ago, technological change accelerated, as spearpoints, firemaking, axes, beads and bows appeared.
One person could literally change the course of history, with nothing more than an idea.
One person could literally change the course of history, with nothing more than an idea.
The Conversation
How a handful of prehistoric geniuses launched humanity’s technological revolution
The stone age saw a pattern where technologies like spears, fire and bows were invented once, then spread
👍116🔥31❤30🤩30🎉14😱12😁6👎3🥰1😢1💩1
ScienceAlert - Latest
Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
➖ @sciencetoall ➖
Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
➖ @sciencetoall ➖
ScienceAlert
Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
High above the red planet, China's Mars orbiter Tianwen 1 has captured a series of incredible, alien images of our neighboring planet.
🔥42👍21🤩8😱7❤1👎1💩1
ScienceAlert - Latest
NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
➖ @sciencetoall ➖
NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
➖ @sciencetoall ➖
ScienceAlert
NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
The James Webb Space Telescope fully deployed its tennis-court sized sunshield Tuesday, a critical milestone for the success of its mission to study every phase of cosmic history, NASA said.
👍64🎉28❤20🔥20🤩12💩2
ScienceAlert - Latest
China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
➖ @sciencetoall ➖
China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
➖ @sciencetoall ➖
ScienceAlert
China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
Just seven months after it announced a milestone record for plasma fusion, the Chinese Academy of Sciences has absolutely smashed it.
👍58🔥42❤11😱4🎉4🤩4💩1
ScienceAlert - Latest
Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
➖ @sciencetoall ➖
Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
➖ @sciencetoall ➖
ScienceAlert
Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
The arid heart of Australia may not easily support life now, but once, many aeons ago, it was lush and teeming. What is now arid desert and dry shrub- and grasslands was once thick with dense forests, alive with life.
👍37😱16🔥13🤩6🎉4😢3👎1💩1
ScienceAlert - Latest
For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
➖ @sciencetoall ➖
For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
➖ @sciencetoall ➖
ScienceAlert
For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
We're seeing many spectacular sights out in space as our telescopes become more powerful, but there's a new contender for the most exciting one yet: According to researchers, we've observed a red supergiant star exploding into a supernova for the f
👍62🔥36🤩13💩7🎉4
Media is too big
VIEW IN TELEGRAM
Ocean Battery stores renewable energy at the bottom of the sea
As useful as renewable energy sources are, they need to be backed up by storage systems that hold energy for times when the Sun isn’t shining or the wind isn’t blowing. Ocean Battery is a new design for an energy storage system that functions a bit like a hydroelectric dam at the bottom of the sea: https://newatlas.com/energy/ocean-battery-renewable-energy-storage/
#energy #technology
As useful as renewable energy sources are, they need to be backed up by storage systems that hold energy for times when the Sun isn’t shining or the wind isn’t blowing. Ocean Battery is a new design for an energy storage system that functions a bit like a hydroelectric dam at the bottom of the sea: https://newatlas.com/energy/ocean-battery-renewable-energy-storage/
#energy #technology
👍37🔥18❤7😱5🤩5🤮5👎4👏2💩1
ScienceAlert - Latest
In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
➖ @sciencetoall ➖
In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
➖ @sciencetoall ➖
ScienceAlert
In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
We can all let out a collective sigh of relief. With its primary mirror array fully unfolded, the major components of the beleaguered James Webb Space Telescope are now deployed, and it continues to calmly make its way to its destination.
👍17🎉5🔥4💩4👎2
ScienceAlert - Latest
Surgeons Implant Pig Heart Into Human Patient in World-First Case
➖ @sciencetoall ➖
Surgeons Implant Pig Heart Into Human Patient in World-First Case
➖ @sciencetoall ➖
ScienceAlert
Surgeons Implant Pig Heart Into Human Patient in World-First Case
US surgeons have successfully implanted a heart from a genetically modified pig in a human patient, a first-of-its-kind procedure, the University of Maryland Medical School said Monday.
❤28👍12💩6🤯4🤮3👎2
This media is not supported in your browser
VIEW IN TELEGRAM
Ten Scientific Discoveries From 2021 That May Lead to New Inventions
From nanobots to cancer treatments, nature inspires a wide variety of innovations
In science, inspiration can come from anywhere.
A researcher might wonder about the thrust produced by butterfly wings as they flit through a meadow. Maybe watching squirrels navigate campus trees like parkour artists sparks curiosity about what goes through their furry little minds as they decide to jump from branch to branch. Others, of course, get their spark from less likely sources: analyzing shark intestines or studying how microscopic water bears walk.
These scenarios and more inspired scientists to take a closer look at the natural world this year, but their influence won’t stop there. Discoveries in nature often inspire new designs for water filtration, solar panels, building materials and lots and lots of robots.
Here are ten findings from 2021 that could one day lead to new inventions.
From nanobots to cancer treatments, nature inspires a wide variety of innovations
In science, inspiration can come from anywhere.
These scenarios and more inspired scientists to take a closer look at the natural world this year, but their influence won’t stop there. Discoveries in nature often inspire new designs for water filtration, solar panels, building materials and lots and lots of robots.
Here are ten findings from 2021 that could one day lead to new inventions.
👍124❤30😱22🤩11🎉9🔥7💩3👎1
ScienceAlert - Latest
Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
➖ @sciencetoall ➖
Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
➖ @sciencetoall ➖
ScienceAlert
Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
For most of life on Earth, oxygen is essential, and sunlight is usually needed to produce that oxygen. But in an exciting twist, researchers have caught a common, ocean-dwelling microbe breaking all the rules.
👍93😱41🔥17❤12🎉8💩6👎2
ScienceAlert - Latest
A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
➖ @sciencetoall ➖
A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
➖ @sciencetoall ➖
ScienceAlert
A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
A rare script from a language in Liberia has provided some new insights into how written languages evolve.
👍52🤩10❤7🔥7💩5😁4👎2
Evolution study suggests DNA mutations are less random than we thought
Chance plays a big part in evolution. Conventional thinking goes that DNA mutations will randomly arise in an organism’s genome, and if these new traits happen to help the organism survive and reproduce, then those mutations will be passed down to the next generation. Over a long enough period, the traits can become characteristic of a population or species.
But is there a pattern to where in the genome DNA mutations occur?
To investigate, researchers from UC Davis and the Max Planck Institute grew hundreds of thale cress plants in the lab , then sequenced their genomes and compared where DNA mutations had taken place – and a non-random pattern seemed to emerge.
“We always thought of mutation as basically random across the genome,” says Grey Monroe, lead author of the study. “It turns out that mutation is very non-random and it’s non-random in a way that benefits the plant. It’s a totally new way of thinking about mutation.
Chance plays a big part in evolution. Conventional thinking goes that DNA mutations will randomly arise in an organism’s genome, and if these new traits happen to help the organism survive and reproduce, then those mutations will be passed down to the next generation. Over a long enough period, the traits can become characteristic of a population or species.
But is there a pattern to where in the genome DNA mutations occur?
“We always thought of mutation as basically random across the genome,” says Grey Monroe, lead author of the study. “It turns out that mutation is very non-random and it’s non-random in a way that benefits the plant. It’s a totally new way of thinking about mutation.
👍150🔥37🤩30😱20🎉17❤14💩9👎4🤮2😁1
ScienceAlert - Latest
There's a Hidden Mathematical 'Law' in The Sand Megaripples Found All Over Earth
➖ @sciencetoall ➖
There's a Hidden Mathematical 'Law' in The Sand Megaripples Found All Over Earth
➖ @sciencetoall ➖
ScienceAlert
There's a Hidden Mathematical 'Law' in The Sand Megaripples Found All Over Earth
Wherever there is sand and an atmosphere, prevailing winds may whip the grains into undulating shapes, pleasing to the eye with their calming repetition.
👍47🔥20😱14❤11💩5🎉4🤩4🥰1
ScienceAlert - Latest
A Common Virus Can Trigger Multiple Sclerosis, According to Huge New Study
➖ @sciencetoall ➖
A Common Virus Can Trigger Multiple Sclerosis, According to Huge New Study
➖ @sciencetoall ➖
ScienceAlert
A Common Virus Can Trigger Multiple Sclerosis, According to Huge New Study
Multiple sclerosis – an autoimmune disease that affects the brain and spinal cord – may emerge after infection with Epstein-Barr virus (EBV).
😱48👍23❤12🔥8😢8💩7👎4🤩2
ScienceAlert - Latest
60 Million Fish Nests in Antarctica Found in Single Largest Breeding Colony to Date
➖ @sciencetoall ➖
60 Million Fish Nests in Antarctica Found in Single Largest Breeding Colony to Date
➖ @sciencetoall ➖
ScienceAlert
60 Million Fish Nests in Antarctica Found in Single Largest Breeding Colony to Date
Scientists onboard an icebreaker in Antarctica were blown away when they spied a trove of 60 million icefish nests dotting the floor of the Weddell Sea. The bonanza of nurseries – each guarded by a ghostly looking parent – represents the lar
👍41😱30❤13🤩12🔥8💩5👎4🎉4👏2
A new artificial intelligence (AI) algorithm has got your chess style pegged. AI software can already identify people by their voices or handwriting. Now, an AI has shown it can tag people based on their chess-playing behavior, an advance in the field of “stylometrics” that could help computers be better chess teachers or more humanlike in their game play. Alarmingly, the system could also be used to help identify and track people who think their online behavior is anonymous.
👍80❤21🔥17😱17🤮7💩7😢5🤩4🥰3🎉2
ScienceAlert - Latest
This Ancient Peruvian Empire Put Hallucinogenics in Beer For Political Reasons
➖ @sciencetoall ➖
This Ancient Peruvian Empire Put Hallucinogenics in Beer For Political Reasons
➖ @sciencetoall ➖
ScienceAlert
This Ancient Peruvian Empire Put Hallucinogenics in Beer For Political Reasons
The ancient Wari empire of Peru might have used hallucinogenic beer to rally support in new territories.
👍37🔥16😁6👎5💩4🤔2🤩1