Vacunacionadultos

We knew platypuses were incredible. Now we know they glow, too

The platypus is one of the planet’s strangest creatures on several counts. Though mammals, these Australian natives lay eggs and sport venomous spines on their rear legs. They also have beaver-like tails and duck-like bills, the latter of which they use to sense prey while hunting at night with their eyes closed.



Platypuses are biofluorescent, meaning their fur glows a bluish-green hue under ultraviolet (UV) light. This photograph, part of a composite image used in a study, uses a yellow filter that reveals a more “true” color of the fur’s fluorescence.


© Photograph courtesy of Jonathan Martin/Northland College; from Anich et al. 2020

Platypuses are biofluorescent, meaning their fur glows a bluish-green hue under ultraviolet (UV) light. This photograph, part of a composite image used in a study, uses a yellow filter that reveals a more “true” color of the fur’s fluorescence.




This image shows what platypuses look like when illuminated with ultraviolet (UV) light. Researcher Jonathan Martin explains that UV light “saturates everything in purple light so the camera has a hard time recording what the eye sees; the yellow filter reduces the purple leaving an image [that] displays a more ‘true’ color of the fluorescence.”


© Composite courtesy of Jonathan Martin/Northland College; from Anich et al. 2020

This image shows what platypuses look like when illuminated with ultraviolet (UV) light. Researcher Jonathan Martin explains that UV light “saturates everything in purple light so the camera has a hard time recording what the

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University of Iowa business dean finalist knew President Bruce Harreld at Harvard

The third and last finalist for the University of Iowa’s Tippie College of Business dean post — who UI President Bruce Harreld happens to know from Harvard Business School — participated Thursday morning in a virtual public forum, taking questions about enrollment concerns, programmatic calls, and COVID-19.

Tom Steenburgh, who holds a professorship in business administration and is senior associate dean for the residential MBA program at the University of Virginia Darden School of Business, wrapped Iowa’s second set of virtual visits from business dean candidates — after a first set of finalists was dismissed over the summer in hopes of being able to do on-campus visits come fall.

When it became apparent the pandemic wasn’t waning, UI restarted the search — aiming to recruit a “new and diverse pool of strong candidates.” Previous finalists had to reapply.

Steenburgh, among his academic and professional experience, worked from 2003 to 2012

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Celebrity star Betelgeuse is smaller and closer to us than we knew

Betelgeuse. Betelgeuse. Betelgeuse.


ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella

If you’re experiencing the creepy sensation of someone breathing down your neck, then it might be Betelgeuse. The infamous star — the subject of an exciting will-it-or-won’t-it supernova discussion earlier this year — may actually be much closer to Earth than we suspected.

Betelgeuse is a red supergiant and it’s monstrous compared with the size of our sun. A study published in The Astrophysical Journal this week unveils some new calculations of the star’s mass and distance, and gives us an estimate for when it’s likely to go supernova. 

The speculation around Betelgeuse exploding kicked into high gear when the star went through some odd dimming and brightening episodes starting in late 2019. Scientists believe a dust cloud caused one of these events. “We found the second

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Jonathan Davies: Wales centre knew of potential career risk after knee injury

Jonathan Davies on what he had to do to get back to playing rugby

Wales centre Jonathan Davies says he knew he was potentially risking his career by playing in the World Cup semi-final defeat against South Africa.

Davies played against the Springboks and New Zealand in the bronze medal match after damaging his knee against Fiji earlier in the tournament.

“I was told if I played the semi-final there was a risk of not finishing my career,” said Davies.

“It was worth the risk. I made that decision… it was something you do.”

Davies had missed the quarter-final win against France and his knee was heavily strapped for the final two matches of Wales’ 2019 campaign.

“It was tough going those last few games… I don’t think it was quite one leg, maybe one and a half!” said the 32-year-old Scarlet.

“I felt capable enough of going out there

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