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New
The latest blog posts to take off on Hacker News. 4,455 posts.
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Dog parasite is developing resistance to treatments
Hookworms have evolved to evade all FDA approved medications used to kill them.
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The Geometry of Color Perception
The previous pages have explained three very different methods for defining a color: (1) the measurement of the color stimulus as a spectral emittance or reflectance curve in colorimetry ; (2) the proportional responses to the stimulus by the L , M and S cones, represented as a chromaticity diagram ; and (3) the…
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The physics anomaly no one talks about: What’s up with those neutrinos?
Science News, Physics, Science, Philosophy, Philosophy of Science
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Losing Covid-19 antibody immunity after six months after Pfizer vaccine
Case Western Reserve University researchers, in partnership with Brown University, examine vaccine’s effectiveness over time on seniors and their ca...
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Tianwen-1 attitude in Mars orbit
It has been a while since the last time I wrote an update about Tianwen-1’s attitude . In that post I showed that Tianwen-1 had changed to a sun angle of 0 degrees with respect to the spacecraft’s X axis on 2020-10-22. Since then, nothing changed, even after the spacecraft arrived to Mars orbit on February 2021, so I…
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Common cold combats Covid-19
A new Yale-led study finds that immune system activity jump-started by rhinovirus exposure could prevent or treat the early stages of COVID-19 infection.
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Engineers grow pancreatic organoids that mimic the real thing
MIT engineers developed a way to grow tiny replicas of the pancreas, using either healthy or cancerous pancreatic cells. Their models could help researchers develop and test potential drugs for pancreatic cancer.
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Why can’t I go faster than the speed of light?
I should state from the very beginning that the title of this post is a bit of a tease. I don’t know why nothing can go faster than the speed of light. No one does. It is a fundamental pos…
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What if I were 1% charged? (2013)
In case you hadn’t heard, the universe is governed by four fundamental forces. But when it comes to understanding nature at almost any level larger than a nucleus and smaller than a planet, …
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How strong would a magnetic field have to be to kill you?
There’s a great joke in Futurama, the cartoon comedy show, about a horror movie for robots. In the movie, a planet of robots is terrorized by a giant “non-metallic being” (a mons…
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MIT-designed project achieves major advance toward fusion energy
For the first time, a large high-temperature superconducting electromagnet was ramped to a field strength of 20 tesla, the most powerful magnetic field of its kind ever created. The demonstration helps resolve the greatest uncertainty in the quest to build the first fusion power plant that can produce more energy than…
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New Evidence Against the Standard Model of Cosmology
Science News, Physics, Science, Philosophy, Philosophy of Science
2149
Why Does the Sunlight Always Come from the North in Shaded Relief Maps?
If you've got a sharp eye and a knack for details, you might have noticed the sun coming from an unrealistic angle in most shaded relief maps: the north. In this article we explain why.
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Melatonin: Much More Than You Wanted to Know (2018)
[I am not a sleep specialist. Please consult with one before making any drastic changes or trying to treat anything serious.] Van Geiklswijk et al describe supplemental melatonin as “a chrono…
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Stanford researchers develop an engineered 'mini' CRISPR genome editing system
Bioengineers have repurposed a “non-working” CRISPR system to make a smaller version of the genome engineering tool. Its diminutive size should make it easier to deliver into human cells, tissues and the body for gene therapy.
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Surgical masks reduce Covid-19 spread, large-scale Stanford study shows
Researchers found that surgical masks impede the spread of COVID-19 and that just a few, low-cost interventions increase mask-wearing compliance.
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Experiments on a $50 DIY air purifier (2020)
You can make a DIY air purifier in 30s. To test if it works, I generated smoke, and measured how well it removes tiny particles.
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Perfect pitch study: Why can’t we identify music notes as well as colors?
Neuroscientists explore how people with absolute pitch process sounds
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A remote island's battle against seabird-killing ants (2015)
At the world’s remotest nesting colony, the Crazy Ant Strike Team beats back its seabird-killing enemy with spray guns, poison... and cat food.
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The Orbit of Planet Nine
Five and a half years after our proposal of the existence of Planet Nine, we have finally accomplished what is perhaps the most important t...
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New study examines ‘Achilles heel’ of cancer tumours
Ranked among the world’s top medical schools with the fifth-largest MD enrollment in North America, the UBC Faculty of Medicine is a leader in both the science and the practice of medicine. Across British Columbia, more than 12,000 faculty and staff are training the next generation of doctors and health care…
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Turning satellite imagery into wall art
See how we go from raw satellite imagery, clouds and all, to beautiful wall art.