From Ars Technica · · 1m 50s
Why large dogs age faster, October science highlights
Large dogs age faster than small ones due to jumping genes, antimatter trapped for months, and UV-visible tattoos.
In brief
Large dogs age faster than small ones due to jumping genes, antimatter trapped for months, and UV-visible tattoos. Large dogs age faster than small ones because of reduced LINE1 methylation, antimatter particles trapped for months, and UV-reactive tattoos now possible. Originally reported by Ars Technica.
Why large dogs age faster
Large dogs age faster than small ones due to reduced control over jumping genes.
“This is one of the clearest molecular signatures we’ve seen that aligns with the well-known size-lifespan trade-off in dogs.”
Jumping genes and aging
Arizona State University scientists found giant dogs lose 35 percent more LINE1 methylation yearly than small breeds.
“It suggests that faster aging in larger dogs may be driven, at least in part, by reduced control over these jumping genes.”
Antimatter trapping breakthrough
Physicists trapped a single positron for months using electric and magnetic fields.
“That would be the biggest discovery in physics in the last century.”
Quantum precision
The positron was chilled to 300 millikelvins, maintaining its quantum state for months.
“They found they could maintain that state for months at a time.”
UV-reactive tattoos
New inks show up only under uv light, fading after hours with bright led exposure.
“There’s a stigma, in science and in many cultures, around body art.”
Tattoo applications
The inks could help cancer patients during radiation therapy without visible markings.
“PhotoTat would make such tattoos invisible except when the treatment is being administered.”
Westminster skeleton
A medieval monk’s skeleton was found in a roman sarcophagus at westminster abbey.
“These are the bones of a high-ranking medieval monk.”
Monk identity
The skeleton likely belongs to abbot aelfwig who died around 1020 or his successor wulboth who died in 1049.
“The bones may also be those of Aelfwig’s successor, Wulboth, who died in 1049.”
Botticelli’s model
Simonetta vespucci died young with symptoms of a pituitary tumor.
“Her symptoms included headache, hallucinations, vomiting, and a high fever.”
Starry night date
Van gogh painted the starry night just before dawn on july 22, 1889.
“The authors note that such exaggeration 'presupposes a real object to amplify.'”
Forensic astronomy
Astronomers used historical weather and star positions to date van gogh’s painting.
“Kim thought the lights in the painting more closely resembled the hyades star cluster in the constellation taurus.”
Historical context
The analysis shifts the painting’s date from june to july 1889 using van gogh’s letters.
“This new analysis, which takes into account simulations, historical weather patterns, star positions, and van gogh’s letters from that year, shifts that date to just before dawn on july 22, 1889.”
Previous research
Donald olson previously used similar methods to date vermeer’s view of delft.
“Olson has found evidence that the blood-red sunset that inspired edvard munch’s the scream was likely an aftereffect of the 1883 eruption of mount krakatoa in indonesia.”
Science highlights
October’s research includes dog aging, antimatter trapping, and uv-reactive tattoos.
“It’s a regrettable reality that there is never enough time to cover all the interesting scientific stories we come across.”
Conclusion
These findings advance understanding of aging, antimatter, and body art technology.
“This is one of the clearest molecular signatures we’ve seen that aligns with the well-known size-lifespan trade-off in dogs.”
Here's the gist
Large dogs age faster than small ones because of reduced LINE1 methylation, antimatter particles trapped for months, and UV-reactive tattoos now possible.
