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Have we vastly underestimated the total number of people on Earth?

New Scientist Feed - Tue, 03/18/2025 - 3:00am
A new way of estimating rural populations has found that we may be undercounting people who live in these areas, potentially inflating the global population beyond the official count of 8.2 billion - but not everyone agrees
Categories: Science

Skeptoid #980: How to Find Atlantis

Skeptoid Feed - Tue, 03/18/2025 - 2:00am

Ten of the places where Atlantis true believers think the mythical city might actually be.

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Categories: Critical Thinking, Skeptic

Vitamin A, Infections and Measles

Science-based Medicine Feed - Tue, 03/18/2025 - 1:07am

I have always had a bias towards the Appeal to Nature Fallacy: An Appeal to Nature Fallacy happens when someone argues that something is good, better, or more authentic simply because it’s natural, while brushing aside anything man-made as inferior or harmful. Or last my version of it. I have always thought of the human body as more or less tuned by […]

The post Vitamin A, Infections and Measles first appeared on Science-Based Medicine.
Categories: Science

What's the Deadliest Part of a Supernova Explosion?

Universe Today Feed - Mon, 03/17/2025 - 4:02pm

From far enough away, most supernovas are benign. But the thing you have to watch out for are the X-rays.

Categories: Science

Dialing in the temperature needed for precise nuclear timekeeping

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 3:42pm
For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics research, and tests of fundamental theories. But researchers are now pushing beyond atomic transitions to something potentially even more stable: a nuclear clock.
Categories: Science

Dialing in the temperature needed for precise nuclear timekeeping

Computers and Math from Science Daily Feed - Mon, 03/17/2025 - 3:42pm
For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics research, and tests of fundamental theories. But researchers are now pushing beyond atomic transitions to something potentially even more stable: a nuclear clock.
Categories: Science

Microlightning Could Have Kickstarted Life on Earth

Universe Today Feed - Mon, 03/17/2025 - 3:26pm

When water is sprayed or splashed, different size microdroplets develop opposite charges. This "microlightning" could've provided the energy needed to synthesize prebiotic molecules necessary for life.

Categories: Science

Scientists tune in to rhombohedral graphene's potential

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:44pm
Scientists are investigating how structures made from several layers of graphene stack up in terms of their fundamental physics and their potential as reconfigurable semiconductors for advanced electronics.
Categories: Science

Good fences make good neighbors (with carnivores)

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:44pm
A new study has found that fortified enclosures also benefit nearby livestock keepers by preventing carnivore attacks.
Categories: Science

From order to chaos: Understanding the principles behind collective motion in bacteria

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:41pm
Researchers have discovered that bacterial swarms transition from stable vortices to chaotic turbulence through distinct intermediate states. Combining experiments with bacterial swarms, computer simulations, and mathematical modeling, the team clarified the intricate process by which orderly swirling turns to disordered turbulence as the free space available to bacteria increases. These findings provide new insights into active matter physics and could inform future applications in micro-robotics, biosensing, and active fluid-based micro-scale systems.
Categories: Science

Stock market performance enhanced through integrated reporting

Computers and Math from Science Daily Feed - Mon, 03/17/2025 - 1:41pm
Companies can significantly enhance their stock market performance by adopting Integrated Reporting (IR) and Combined Assurance (CA) practices, according to new research that underscores the importance of transparency and accuracy in financial reporting.
Categories: Science

Direct evidence revealed for rare pulsing pear-shapes in Gadolinium nuclei

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:41pm
Scientists have acquired direct evidence of rare, pulsing pear-shaped structures within atomic nuclei of the rare-earth element Gadolinium, thanks to new research.
Categories: Science

RNA origami: Artificial cytoskeletons to build synthetic cells

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:40pm
With the long-term goal of creating living cells from non-living components, scientists in the field of synthetic biology work with RNA origami. This tool uses the multifunctionality of the natural RNA biomolecule to fold new building blocks, making protein synthesis superfluous. In pursuit of the artificial cell, a research team has cleared a crucial hurdle. Using the RNA origami technique, they succeeded in producing nanotubes that fold into cytoskeleton-like structures.
Categories: Science

Newly identified bacterial protein helps design cancer drug delivery system

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:37pm
Researchers have identified a previously unknown bacterial protein, the structure of which is being used in the design of protein nanoparticles for the targeted delivery of anticancer drugs to tumors.
Categories: Science

Combination of cosmic processes shapes the size and location of sub-Neptunes

Space and time from Science Daily Feed - Mon, 03/17/2025 - 1:37pm
A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new study.
Categories: Science

Illusion of 'dazzle' paint on World War I battleships

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:37pm
A new analysis of 105-year-old data on the effectiveness of 'dazzle' camouflage on battleships in World War I has found that while dazzle had some effect, the 'horizon effect' had far more influence when it came to confusing the enemy.
Categories: Science

Top locations for ocean energy production worldwide revealed

Matter and energy from Science Daily Feed - Mon, 03/17/2025 - 1:37pm
Until now, a global evaluation of ocean current energy with actual data was lacking. Using 30 years of NOAA's Global Drifter Program data, a study shows that ocean currents off Florida's East Coast and South Africa have exceptionally high-power densities, ideal for electricity generation. With densities over 2,500 watts per square meter, these regions are 2.5 times more energy-dense than 'excellent' wind resources. Shallow waters further enhance the potential for ocean current turbines, unlike areas like Japan and South America, which have lower densities at similar depths.
Categories: Science

New AI model analyzes full night of sleep with high accuracy in largest study of its kind

Computers and Math from Science Daily Feed - Mon, 03/17/2025 - 1:37pm
Researchers have developed a powerful AI tool, built on the same transformer architecture used by large language models like ChatGPT, to process an entire night's sleep. To date, it is one of the largest studies, analyzing 1,011,192 hours of sleep. The model, called patch foundational transformer for sleep (PFTSleep), analyzes brain waves, muscle activity, heart rate, and breathing patterns to classify sleep stages more effectively than traditional methods, streamlining sleep analysis, reducing variability, and supporting future clinical tools to detect sleep disorders and other health risks.
Categories: Science

Webb telescope captures its first direct images of carbon dioxide outside solar system

Space and time from Science Daily Feed - Mon, 03/17/2025 - 1:36pm
The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has long been a key target for planet formation studies.
Categories: Science

Age of upcoming asteroid flyby target

Space and time from Science Daily Feed - Mon, 03/17/2025 - 1:36pm
New modeling indicates the main belt asteroid (52246) Donaldjohanson may have formed about 150 million years ago when a larger parent asteroid broke apart; its orbit and spin properties have undergone significant evolution since. When NASA's Lucy spacecraft flies by this approximately three-mile-wide space rock on April 20, 2025, the data collected could provide independent insights on such processes based on its shape, surface geology and cratering history.
Categories: Science

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