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[The Environmental Impact of Tennis Balls and the Digital Divide in Professional Communication]-[IN VIDEO: How used tennis balls come back to life]

Round Table China · B2 · 2026-08-14

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📋 Summary

Tennis Balls: A Hidden Environmental Burden

The podcast begins by shedding light on a surprising environmental issue: the massive waste generated by tennis balls. With roughly 330 million tennis balls discarded annually worldwide, their impact is significant. These balls, composed of a rubber core wrapped in a blend of wool and nylon and sealed with industrial-strength glue, are notoriously difficult to recycle. Because of this construction, they can take up to 400 years to decompose in a landfill.

Professional tournaments are major contributors to this waste; for instance, the Wimbledon Championships and the French Open use tens of thousands of balls during their two-week durations. To combat this, innovative projects are emerging. In Qingdao, China, a brand-new tennis court was constructed using over 20,000 recycled tennis balls. The balls were crushed, shredded, and separated into their base components—rubber and felt—to create a functional, high-performance court surface. This process not only diverts waste but also reduces carbon emissions, equivalent to the amount absorbed by four and a half hectares of forest per year.

Global initiatives, such as the "Recycle Balls" nonprofit in the U.S. and AI-powered collection machines at the China Open, are also gaining traction. These initiatives aim to educate the public and streamline collection, turning discarded balls into dog toys, furniture footings, or new sports surfaces. This shift highlights a growing trend in the sports industry: moving toward sustainable infrastructure and responsible manufacturing, supported by new ecological codes and policies that incentivize recycled materials.

The Email Etiquette Crisis: Digital Natives vs. Professional Standards

The discussion then pivots to a viral topic in China: the frustration of professors and employers regarding college students' lack of "email etiquette." Many young people, who have grown up in an era dominated by instant messaging platforms like WeChat and QQ, view formal email as an archaic or unnecessary medium.

HR professionals and educators report receiving internship applications with blank subject lines, missing attachments, or files poorly named (e.g., "final version to reallyfinal.pdf"). While some students argue that these demands are outdated and that instant messaging is more efficient, experts emphasize that email remains a critical tool for professional correspondence, academic research, and international communication.

Interestingly, the data shows that despite the rise of chat-based office platforms like DingTalk and Feishu—which cover 92% of China's collaborative office software market—global email volume continues to rise. In the West, even Gen Z workers are increasingly favoring email over instant messaging for professional tasks, specifically to avoid the pressure of immediate, real-time responses and to maintain a better work-life balance.

The podcast concludes that the core issue is not necessarily the medium, but the "professionalism" and "attention to detail" required in formal settings. Mastering the "4C" business correspondence tool—Conciseness, Clarity, Correctness, and Courtesy—remains a vital skill. Ultimately, the hosts suggest that writing a professional email is an act of empathy, requiring the sender to consider the recipient's perspective, proving that while digital tools evolve, the fundamentals of respectful, clear communication remain essential.

🎯Key Sentences

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As long as you're using it, it's not that perfect anymore.
2
One person's trash could be another person's treasure.
3
I kind of have an anxiety of writing emails and receiving emails.
4
Why do we need to care about emails?
5
I hope this letter finds you well.
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📝Key Phrases

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without a second thought
2
go through
3
shook our idea
4
make a huge difference
5
end up in a landfill
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📖 Transcript

Discussion keeps the world turning.
This is Roundtable.
Think about something you throw away every day without a second thought.
Now imagine that thing takes 400 years to disappear.
That's the reality with tennis balls, and we go through millions of them.
But there's some good news.

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