Mark Oldham

Medical Physicist

[Mark Oldham @MarkO_NC]

First world cup with AI social media .. and internet having way to much fun with this !

[Alf Really 🇺🇦🇬🇧🇨🇦🇪🇺🇮🇱🇩🇪🇵🇱 @vik8867dn]

#Norway vs #England | World Cup Warriors
#haaland #england #norway #kane #worldcup
Created with @higgsfield.ai

[Conversations with Coleman @ConvoswColeman]

America turns 250 this Fourth of July—and patriotism will be on full display in every corner of the country.

But for some, that pride doesn't come easy.

@Coldxman shares a special message about how progressive ideology takes for granted what precious gifts America offers that most people on earth don't really have.

[Science girl @sciencegirl]

In 2012, researchers achieved an extraordinary scientific milestone by regenerating a flowering plant from tissue that was approximately 32,000 years old, the oldest plant material ever brought back to life.

The plant, Silene stenophylla, is a small Arctic species whose seeds were discovered deep in Siberian permafrost near the Kolyma River. The material had been buried about 38 meters (124 feet) underground inside an Ice Age squirrel’s food cache. Radiocarbon dating confirmed that the seeds dated back to a time when woolly mammoths still roamed the region.

Although many of the mature seeds were damaged, likely by the squirrel that originally stored them, some immature seeds retained viable tissue. Scientists carefully extracted this preserved tissue and cultivated it in sterile laboratory conditions. From this, they successfully regenerated complete, living plants.

The revived plants grew normally, produced flowers, and generated new seeds. While they were genetically very similar to modern Silene stenophylla, researchers observed subtle differences in flower structure, providing insight into how the species has changed over tens of thousands of years.

The seeds had remained frozen at around −7°C (19°F), a temperature low enough to prevent cellular breakdown and decay. Studying how this ancient tissue survived for millennia may help improve long-term seed preservation methods. Modern facilities such as the Svalbard Global Seed Vault depend on freezing techniques to safeguard global crop diversity. Discoveries like this suggest that permafrost may preserve not only climate records and ancient animal remains, but also viable biological material from ecosystems long past.

[Culture Explorer @CultureExploreX]

Truly extraordinary!

This is the most beautiful thing I’ve seen in ages!

A remarkable young fellow, Elisey Mysin, is a Russian pianist, composer, child prodigy, and actor. He has got to be pure genius.

[Black Hole @konstructivizm]

Behold the most breathtaking moment in space exploration history: NASA's iconic photograph of astronaut Bruce McCandless II during humanity's first-ever untethered spacewalk in 1984.Strapped into a nitrogen-powered jetpack known as the Manned Maneuvering Unit, McCandless boldly floated completely free—no tether, no lifeline—venturing up to 320 feet (about 98 meters) from the Space Shuttle Challenger, farther than any human had ever drifted before.Against the infinite blackness of space, with Earth glowing brilliantly below, he became the ultimate symbol of human daring and freedom in the void.
NASA

[Steven Pinker @sapinker]

"There’s a public health imperative to quickly expand the adoption of autonomous vehicles. More than 39,000 Americans died in motor vehicle crashes last year, more than homicide, plane crashes and natural disasters combined." Not surprisingly to a psychologist, properly instrumented self-driving cars have a fraction of the accident rate. https://t.co/p0s2axBiuH

[EFOMP @EFOMP_org]

👏 Happy International Day of Medical Physics #IDMP2025 to all Medical Physicists around the world‼️ Together, through collaboration, research, and technological progress, we’re shaping a smarter, safer, and more connected future for healthcare‼️
#medicalphysics #IDMP2025

[Duke Radiation Oncology @DukeRadOnc]

Congratulations to @DukeCancer #RadOnc Nicole Larrier, MD, MS, who is among the 43 members of @ASTRO_org to be named a Fellow for 2025! We are so thrilled for her 🔗 https://t.co/xSddophlmK

[Duke Radiation Oncology @DukeRadOnc]

We're excited to announce the appointment of Erik Sulman, MD, PhD, as the new chair of Duke #RadOnc at @DukeMedSchool, effective 8/1. Dr. Sulman joins us from @nyulangone. Looking forward to welcoming him! 🔗 https://t.co/YCswg7Fb3t

[Mark Oldham @MarkO_NC]

https://t.co/g2dRLxv2iA

[Chief Nerd @TheChiefNerd]

Length of President’s first address to the Joint Session of Congress

[Working@Duke @WorkingatDuke]

Duke University, including the School of Medicine and School of Nursing, will extend the severe weather and emergency conditions policy until 6 a.m. Friday, but Duke University Health System (DUHS) will return to a normal schedule at noon today (Thursday). https://t.co/Ntl67xeGQA

[NASA Webb Telescope @NASAWebb]

Dust in the (stellar) wind

This new Webb image shows an edge-on protoplanetary disc around a newly formed star, surrounded by jets and a disc wind, in unprecedented detail. Read more: https://t.co/tcxVh7FNHN

[Tesla @Tesla]

Tesla leads in vehicle lifespan & mileage, per recent UK study

[Alexandra Badea @portokalh]

Excited about the 2025 DIPY Workshop! Whether new to diffusion imaging or looking to deepen your expertise, this workshop offers something for everyone. Join us, learn with us, and help define the steps the field needs to take to advance. Thanks to DIPY team at IU and beyond!

[Dr M. Mahesh (ಮಹೇಶ್) (he/him/his) @mmahesh1]

For anyone interested to learn more about medical physics, @aapmHQ has a way.

Apply to "Summer Undergraduate Fellowship Program" which will allow selected ones to spend a summer working in a medical physics environment

Due date: February 5th, 2025
https://t.co/5svXL9qprQ

[Bill Ackman @BillAckman]

Putting out fires before they spread does not seem like a serious technological challenge in a world with @SpaceX, @xai and @anduriltech.

So @elonmusk and @PalmerLuckey, why don’t we start a company that uses satellites, AI, and drone technology to put out fires before they spread?

One can envision satellite monitoring, rapid drone investigation, and drone swarm water delivery. The number of drones sent to extinguish the fire and the nature of the extinguishing agent (water, foam, dry or wet chemicals etc) would be a function of the nature and scale of the fire. No human lives would be put a risk and there is no risk of DEI involvement in drone selection.

What do you think? I would love to invest.

And it would be very good for real estate values in California.

[Stephen Taylor @stephen_taylor]

Zuckerberg says Facebook and Instagram will now prioritize free speech.

Attributes a recent cultural tipping point to debates like immigration and gender where censorship is now "out of touch".

Says fact checkers were too biased and legacy media too political about censorship

[Duke Radiation Oncology @DukeRadOnc]

The @DukeMedPhys Graduate Program recently celebrated 2 decades. Read about the founding of the program, the establishment of the Duke #MedPhys Fund for Excellence and future directions from PD @MarkO_NC 🔗 https://t.co/Chw3Natb7P @DukeRadiology @DukeMedSchool @DukeHealth @DukeU

[Mark Oldham @MarkO_NC]

More info on this wonderful event and milestone for our program !https://t.co/INWFh294ia