Ian Hurricane in Florida today
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Based on its market share, the world's most notorious cryptocurrency Bitcoin results in more climate damage than the production of beef and nearly as much damage as crude oil, researchers in the United States have calculated.m
ScienceAlert
Bitcoin's Climate Impact Is Bigger Than Beef Farming – And It's Only Getting Worse
It could soon be worse than crude oil.
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While NASA’s Juno spacecraft has captured some stunning imagery of Jupiter since entering orbit around the gas giant in 2016, it’s not the only celestial body in the probe’s sights. As part of its exploration of the Jovian system, Juno is also inspecting one of planet’s largest moons in Europa, and has this week swooped in for its closest look yet.
Europa is a source of much intrigue for scientists on the hunt for life beyond Earth. For years, researchers have been watching the moon closely from afar and evidence of liquid water has begun to build, adding weight to the theory that a subsurface ocean lies beneath its icy shell.
This salty body of water is thought to be one the most likely places to harbor life in our Solar System, and with its advanced suite of imagers and instruments, Juno may just help us dig into these secrets. On Thursday September 29, the probe came within 219 miles (352 km) of the moon’s surface, and was the first spacecraft to fly this close to Europa since the Galileo probe in 2000.
In doing so, Juno captured what are some of the highest-resolution images of Europa to date, at around 1 km (0.6 miles) per pixel, along with new data on its icy shell and subsurface structure. The first of these images has now made its way back to Earth, and was snapped around 1,500 km (930 miles) from the surface as Juno zeroed in.
Europa is a source of much intrigue for scientists on the hunt for life beyond Earth. For years, researchers have been watching the moon closely from afar and evidence of liquid water has begun to build, adding weight to the theory that a subsurface ocean lies beneath its icy shell.
This salty body of water is thought to be one the most likely places to harbor life in our Solar System, and with its advanced suite of imagers and instruments, Juno may just help us dig into these secrets. On Thursday September 29, the probe came within 219 miles (352 km) of the moon’s surface, and was the first spacecraft to fly this close to Europa since the Galileo probe in 2000.
In doing so, Juno captured what are some of the highest-resolution images of Europa to date, at around 1 km (0.6 miles) per pixel, along with new data on its icy shell and subsurface structure. The first of these images has now made its way back to Earth, and was snapped around 1,500 km (930 miles) from the surface as Juno zeroed in.
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The 2022 Nobel Prize in Physics has been awarded to three scientists for their work in pioneering quantum information science. Alain Aspect, John F. Clauser and Anton Zeilinger all conducted some of the first experiments with entangled photons, enabling a future for commercial quantum computers.
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In a world-first clinical trial, three babies have been born after receiving stem cell treatment for spina bifida. The treatment involves administering a stem cell patch to the fetus’ spine while still developing in the womb, and early results are promising one year on.
Video: https://youtu.be/TGvHRqsopQo
Video: https://youtu.be/TGvHRqsopQo
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The findings come from a team of researchers at the University of California, San Francisco investigating a signaling pathway called the integrated stress response (ISR). This is a general cellular mechanism that is triggered in the presence of environmental stresses and often leads to a shutdown in the protein production facilities within cells.
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Engineers at Duke University have developed a novel delivery system for cancer treatment and demonstrated its potential against one of the disease’s most troublesome forms. In newly published research in mice with pancreatic cancer, the scientists showed how a radioactive implant could completely eliminate tumors in the majority of the rodents, demonstrating what they say is the most effective treatment ever studied in these pre-clinical models.
Pancreatic cancer is notoriously difficult to diagnose and treat, with tumor cells of this type highly evasive and loaded with mutations that make them resistant to many drugs. It accounts for just 3.2 percent of all cancers, yet is the third leading cause of cancer-related death. One way of tackling it is by deploying chemotherapy to hold the tumor cells in a state that makes them vulnerable to radiation, and then hitting the tumor with a targeted radiation beam.
Pancreatic cancer is notoriously difficult to diagnose and treat, with tumor cells of this type highly evasive and loaded with mutations that make them resistant to many drugs. It accounts for just 3.2 percent of all cancers, yet is the third leading cause of cancer-related death. One way of tackling it is by deploying chemotherapy to hold the tumor cells in a state that makes them vulnerable to radiation, and then hitting the tumor with a targeted radiation beam.
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Engineers at the SLAC National Accelerator Laboratory have spent the last seven years building the Legacy Survey of Space and Time, or LSST, camera. The camera is the size of a small car and weighs about three tons, and at five feet across, the lens holds a Guinness World Record. Watch the video to see visit inside the clean room with the camera.
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Scientists continue to blow through data transmission records, with the fastest transmission of information between a laser and a single optical chip system now set at 1.8 petabits per second. That's well in excess of the amount of traffic passing across the entire internet each second.
Here's another comparison: the average broadband download speed in the US is 167 megabits per second. You need 1,000 megabits to get to a gigabit, and then 1 million gigabits to get up to 1 petabit.
No matter how you present it, 1.8 petabits is a serious amount of data to transmit in a second.
The supercharged data transfer system is built around a custom-design optical chip, which uses the light from a single infrared laser and splits it into hundreds of frequencies. The frequencies are isolated at fixed distances from each other, like teeth in a comb – hence the name for this setup, which is a frequency comb.
Each 'tooth' on a frequency comb can send its own burst of data, which is how the huge transmission rates are achieved. Using more conventional means, around a thousand lasers would be needed to carry the same number of 1s and 0s.
Here's another comparison: the average broadband download speed in the US is 167 megabits per second. You need 1,000 megabits to get to a gigabit, and then 1 million gigabits to get up to 1 petabit.
No matter how you present it, 1.8 petabits is a serious amount of data to transmit in a second.
The supercharged data transfer system is built around a custom-design optical chip, which uses the light from a single infrared laser and splits it into hundreds of frequencies. The frequencies are isolated at fixed distances from each other, like teeth in a comb – hence the name for this setup, which is a frequency comb.
Each 'tooth' on a frequency comb can send its own burst of data, which is how the huge transmission rates are achieved. Using more conventional means, around a thousand lasers would be needed to carry the same number of 1s and 0s.
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The proximity of each reflection is dependent on the angle of observation with respect to the black hole, and the rate of the black hole's spin, according to a mathematical solution worked out by physics student Albert Sneppen of the Niels Bohr Institute in Denmark in July 2021.
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Bacteria are increasingly developing resistance to our best antibiotics, leaving doctors with fewer and fewer treatment options. In many cases, we’re down to our last-resort drugs, such as those that induce severe side effects within the body.
Drugs given to the whole body can be too much of a shotgun approach, damaging cells that aren’t meant to be targeted. A new study has found that cloaking drugs inside red blood cells could help guide powerful but toxic antibiotics to target bacteria.
Drugs given to the whole body can be too much of a shotgun approach, damaging cells that aren’t meant to be targeted. A new study has found that cloaking drugs inside red blood cells could help guide powerful but toxic antibiotics to target bacteria.
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Who is the most underrated predator in the animal kingdom?
There is one. A creature that lives near water belongs to the insect order Odonata, has been around for over 3 million years and the only thing that has changed is its size
The Dragonfly.
The Dragonfly has an almost unparalleled Flight system, a holster of adaptations including:
🔹Direct Flight Muscles are attached to the base of the wings which allows it to control each wing separately, effectively able to perform flight techniques like Phased stroking, a Dragon-fly can fly in all 6 Directions including backward! its no wonder they are called acrobats of the Sky.
🔹A Pterostigma provides counter-balance during flight and prevents wing fluttering, while also giving it a boost in Top-flight speeds
🔹3-dimensional Patterns and veins on wings that provide wing Stability during flight.
🔹Near 360-degree vision is made possible by the presence of about 30000+ light receptors as its eyes cover most of its head
🔹It's the most impressive system though is its Mind, integrating its visual and Motor system, helps put all this power into action. Hunting!
There is one. A creature that lives near water belongs to the insect order Odonata, has been around for over 3 million years and the only thing that has changed is its size
The Dragonfly.
The Dragonfly has an almost unparalleled Flight system, a holster of adaptations including:
🔹Direct Flight Muscles are attached to the base of the wings which allows it to control each wing separately, effectively able to perform flight techniques like Phased stroking, a Dragon-fly can fly in all 6 Directions including backward! its no wonder they are called acrobats of the Sky.
🔹A Pterostigma provides counter-balance during flight and prevents wing fluttering, while also giving it a boost in Top-flight speeds
🔹3-dimensional Patterns and veins on wings that provide wing Stability during flight.
🔹Near 360-degree vision is made possible by the presence of about 30000+ light receptors as its eyes cover most of its head
🔹It's the most impressive system though is its Mind, integrating its visual and Motor system, helps put all this power into action. Hunting!
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Researchers at the University of Oslo are proposing a novel treatment for stroke that involves administering an infusion of a blood protein suspected to protect the brain from damage. Early tests in mice indicate if the treatment is given within hours of a stroke occurring it could improve long-term outcomes.
the hypothesis was that FSAP somewhat protects the brain from the harmful effects of stroke, and maybe it could be turned into a treatment.
_
University of Oslo
the hypothesis was that FSAP somewhat protects the brain from the harmful effects of stroke, and maybe it could be turned into a treatment.
_
University of Oslo
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With striking high-speed video footage, scientists have for the first time detailed how predatory mosquito larvae attack and capture prey in aquatic habitats. Published in the Annals of the Entomological Society of America, this new research sheds light on behavior that has long proven too small and too fast to study, until now. In this video, a Psorophora ciliata larva strikes a prey larva via a sudden neck extension to launch its head away from its body and toward the prey.
Read more here
Video Credit: Annals of the Entomological Society of America (2022). DOI: 10.1093/aesa/saac017
Read more here
Video Credit: Annals of the Entomological Society of America (2022). DOI: 10.1093/aesa/saac017
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After more than three years circling the Earth, the Planetary Society’s LightSail 2 mission has come to an end following a fiery reentry. The satellite was an important tech demo for the idea of solar sailing, which could eventually propel spacecraft to other stars.
LightSail 2 was launched aboard a SpaceX Falcon Heavy rocket in June 2019, settling into an initial orbit at an altitude of around 720 km (450 miles). At that height, the Earth’s atmosphere is still thick enough to create drag, which would threaten to eventually pull the spacecraft down.
But that’s where the plucky little satellite’s special ability came in. Although it’s only the size of a shoebox, LightSail 2 unfurled a big reflective sheet, called a solar sail, about the size of a boxing ring. The idea is that photons from sunlight strike this sail and generate tiny amounts of thrust, allowing the craft to change its orbit.
And LightSail 2 demonstrated this concept beautifully. In three and a half years, the spacecraft completed around 18,000 orbits and traveled 8 million km (5 million miles), adjusting its orbit continuously to keep itself aloft. But all good things must come to an end, and sometime on November 17, drag finally won the tug-of-war and pulled the spacecraft back to Earth.
LightSail 2 was launched aboard a SpaceX Falcon Heavy rocket in June 2019, settling into an initial orbit at an altitude of around 720 km (450 miles). At that height, the Earth’s atmosphere is still thick enough to create drag, which would threaten to eventually pull the spacecraft down.
But that’s where the plucky little satellite’s special ability came in. Although it’s only the size of a shoebox, LightSail 2 unfurled a big reflective sheet, called a solar sail, about the size of a boxing ring. The idea is that photons from sunlight strike this sail and generate tiny amounts of thrust, allowing the craft to change its orbit.
And LightSail 2 demonstrated this concept beautifully. In three and a half years, the spacecraft completed around 18,000 orbits and traveled 8 million km (5 million miles), adjusting its orbit continuously to keep itself aloft. But all good things must come to an end, and sometime on November 17, drag finally won the tug-of-war and pulled the spacecraft back to Earth.
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