Jonas Salk administering the polio vaccine to a child. Photo source: The New Atlantis.

#ResistanceRoots

Jonas Salk was born on this day in 1914 in New York City. He is best known for developing the first safe and effective polio vaccine, one of the most significant medical breakthroughs of the 20th century. He famously refused to patent his vaccine or seek any profit from it. /1

colorful leaves on ground

good leaf season

Chester Carlson demonstrating a prototype of his photocopier invention.

#ResistanceRoots

Today in history, 1938: Chester Carlson invents the photocopier. He eventually made millions of dollars for his invention but lived modestly and gave away as much as $150 million in his lifetime, often anonymously, primarily to civil rights causes and educational institutions. /1

体细胞克隆之父、2012年诺贝尔生理学奖获得者戈登去世，享年92岁。他也是我小时候的偶像。他上中学时（埃顿公学），其生物教师给评语，称该生异想天开想当科学家，纯属浪费时间，学校因此禁止他学科学课程。毕业后他被牛津大学录取，但中学没学过科学课程，不能上他想上的动物学，为此推迟入学，补习两年科学课，才去了牛津动物系。大一的时候，在牛津树林里发现英国从未发现的锯蝇，震惊英国昆虫学界，为此发表了一篇论文。他一直保留着当年生物教师的评语。

At this safety demo, Anchorage residents aim their bear spray at a foam target The goal was to let participants actually practice using bear spray — so that if they run into a bear, it’s not their first time using it.

During a recent gathering at Kincaid Park, Anchorage trail users learned how to use bear spray — a skill that requires practice before sudden encounters.

"You’ll be a lot more prepared," said co-instructor Isabel Grant.

YouTube video by CBC News Grizzly follows couple along popular trail in terrifying encounter

Always carry bear spray if you plan to go hiking in the mountains. This couple was very lucky.

youtu.be/wPg0KQqR2P8?...

This one’s pretty good

400 lumens bf, isolator gf

Interferometer Device Sees Text from a Mile Away A high-resolution imaging system captures distant objects by shining laser light on them and detecting the reflected light.

Researchers have applied a technique from radio astronomy to image remote objects on Earth. The system, which uses laser beams to illuminate a target and telescopes to collect the reflected light, can resolve millimeter-wide letters at a distance of 1.36 km.

Pray for our inboxes.

- I want things to be different - *smashes everything* - oh no

I think about this comic at least once a week

“Accessibility is not just about inventing the technologies, it's about creating the opportunities for the conversation about how things can be better.” —Dr. Joshua Miele

Today on the podcast, Dr. Joshua Miele talks about his experience growing up blind and how he built a career as an inventor and designer of adaptive technology.

Listen here 🎧: pod.link/73329284/epi...

Go-fund them!

They damage. We repair.

Full page ad in today’s New York Times:

#gofund them

These National Park workers say a Trump agency fired them illegally. A judge agrees Eileen and James Kramer were fired from their jobs at Lake Clark National Park in Alaska, even though they both recently received promotions. A judge has found the administration's firings illegal.

Eileen and James Kramer were fired from their jobs at Lake Clark National Park in Alaska, even though they both recently received promotions. A judge has found the administration's firings illegal.

Jim Acosta just powerfully announced on air he is leaving CNN with the words: "It is never a good time to bow down to a tyrant." He added, "Don’t give in to the lies. Don’t give in to the fear. Hold on to the truth and to hope." Amen. Jim will be missed.

The Perfect Temperature for Enjoying a Cup of Tea

“The International Agency for Research on Cancer has stated that beverage temperatures of 150° or higher can increase esophageal cancer risk.”

teatimemagazine.com/perfect-temp...

A Mathematician's Guide to the Perfect Mug of Tea In ancient Chinese mythology, it is said that the god Shennong once consumed some 72 different herbs, many of which were riddled with poison. Then,

When a mathematician pretends to be a tea drinker, he/she created a formula that overlooked the physics or the arts of tea making. Yet, he/she could still win a Graham Hoare Prize.

ima.org.uk/15628/a-math...

A Mathematician's Guide to the Perfect Mug of Tea In ancient Chinese mythology, it is said that the god Shennong once consumed some 72 different herbs, many of which were riddled with poison. Then,

“In the UK alone, we drink enough tea to fill about 20 Olympic swimming pools every day.”

ima.org.uk/15628/a-math...

听说过这本书，今天看到卢先生的博文，有空要找来看看。刚仓天心的《茶之书》以千利休之死结尾，只简单提及这位茶道大师。

The Dutch East India Company (Verenigde Oostindische Compagnie, VOC) introduced tea to the Netherlands as early as 1610 and dominated the European tea trade during the early 1600s. However, despite their efforts, they did not begin cultivating tea successfully until the 1800s.

蔡教授的《数学大历史》有提及道古桥和道古新桥。

After the mid-eighth century, tea drinking became increasingly popular. Not only the Chinese, but also Uighur visitors to the capital were eager to seek out tea shops.

By the early 8th century, tea had gained widespread popularity in northern China. Ennin enjoyed a tea ceremony with the influential official Li De-yu, seated on chairs in the "Gallery of Auspicious Images," which had been restored thanks to the generous contributions of Persian and Cham merchants.

There's more about the crazy history of tea, and the brutal organized crime networks that supplied it to Britain, in my book.

You should check it out. Available from all fine booksellers and dystopian corporations. #booksky #histbookchat

lnk.to/Hawkhurst


9/9

Ennin, also known as Jikaku Daishi (慈覺大師), was a prominent priest of the Tendai school of Buddhism in Japan and served as its third Zasu. In 838, he joined a diplomatic mission to the Tang dynasty’s imperial court. Ennin brought various items, including powdered tea, as gifts for the Chinese.

我曾在旧微博里写过一个疑问，即所谓清洁能源，若将制作、维护、报废过程的污染考虑在内，是否真的比传统能源更清洁？有意思的是， 最近在一本书 (图二) 里，读到一个事例：美国的科罗拉多州曾自豪地宣称，该州的清洁能源风力发电占总发电量的比例超过了 10%。但细致研究发现，该州电力系统的二氧化碳排放量反而增加了，因为在风力发电无法进行的时候 (比如无风的时候)，该州的火力发电必须临时增加以维持电力的供求平衡，而这种临时增加跟恒定运转相比，二氧化碳的排放量会大大增加，且增量超过了风力发电的减排效果。这跟我的疑问虽然不同，却也显示出清洁能源是否真的清洁， 是不能单凭该种能源在发电环节上的清洁作出判断的。

With a common cup size of 200 ml and over 5 billion cups of tea consumed daily, the total daily tea consumption is approximately equal to the volume of 400 Olympic swimming pools.