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Innovation

Salt-Powered Fridge

Three teenagers from India have created a game-changing device to address one of rural healthcare’s toughest challenges: refrigeration without electricity. Their invention, the Thermavault, is a portable fridge that stays cold using salt instead of power or chemical coolants. As the salts dissolve in water, they absorb heat and lower the temperature—making it possible to store everything from vaccines to transplant organs in remote areas where traditional refrigeration is often unavailable or unreliable.

The innovators—Dhruv Chaudhary, Mithran Ladhania, and Mridul Jain, all children of medical professionals in Indore—were inspired by the struggle to keep COVID-19 vaccines viable during deliveries to remote villages in India’s tropical heat. After extensive testing with different salts, they discovered that ammonium chloride could reliably maintain the 2–6°C range required for vaccines, while the addition of barium hydroxide octahydrate brought temperatures below freezing, opening up use for more sensitive medical supplies.

Their prototype has already passed early tests at local hospitals, keeping vaccines cold for up to 12 hours. With the support of a $12,500 grant and recognition from the 2025 Earth Prize, the team is now preparing 200 more units for trials across 120 hospitals in Indore. If successful, their invention could offer an affordable, low-tech breakthrough for healthcare delivery in underserved regions worldwide.

Good News

83-year-old Super-Fan

Bobbi Oxford grew up on the sidelines of a sport she wasn’t allowed to join. As a girl in the heyday of drag racing, she watched her brother blaze down the track while women were told to stay in the stands. Her one shot—a women-only “Powder Puff Derby”—was rained out. No reschedule. No second chance. For decades, racing remained a dream deferred.

Until now.

At 83, Bobbi finally got behind the wheel. Thanks to Wish of a Lifetime, a nonprofit that helps seniors fulfill long-held dreams, she took to the track at Pikes Peak International Raceway. Wearing a racing suit and helmet, she drove lap after lap in a retired race car, grinning as the engine roared beneath her. “I have the need for speed, baby,” she said. Her goal? “As fast as I can—maybe a hundred and thirty.”

Cheered on by her family, senior home friends, and a group of women racers, Bobbi soaked in every moment. After her laps, a pro driver took her for a high-speed thrill ride, complete with drifts and tire smoke. When it ended, she climbed out, beaming. “I made it! Nothing can top this.” Then she paused and smiled. “Never in my wildest dreams did I think I’d drive a race car. But I did.”

Lifestyle

Zumba for Longer Life

At 94, Mary Marson is a living testament to the power of movement and mindset. A regular at Zumba classes three times a week, she credits her health and vitality to staying active and eating organic. Born in Jamaica and now living in southeast London, Mary hasn’t faced any major health issues—just the occasional cold. She’s become a local fixture at Wavelengths Leisure Centre in Deptford, where she can still keep up with the full routine. “The music keeps me going. I just don’t feel old,” she says with a grin.

Mary moved to England at 27 and says her longevity runs in the family, but she’s quick to point out that she doesn’t rely on luck. She chooses to keep moving, maintain a positive outlook, and reject the idea that aging means slowing down. The staff at Wavelengths even celebrate her birthday each year, treating her as part of their extended family. “Some people are scared to try new things or feel like they don’t belong around younger folks,” she says. “But staying inactive just makes things worse.”

With four children, four grandchildren, and five great-grandchildren cheering her on, Mary’s legacy goes well beyond her own fitness. Her Zumba instructor, Topaz White, calls her a “She-ro,” inspiring others in the class and beyond. Her message is simple but powerful: don’t let fear or age stop you. Get involved, stay curious, and you might surprise yourself—and even motivate the next generation to move.

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Mind Stretchers

⁉️ 

I’m a four-digit number. Multiply me by 4, and my digits flip end-for-end.
What number am I?

Yesterday’s Mind Stretchers:

I’m a two-digit number. My digits add up to 11. My digits multiply to 28.
Which number am I? — 47 or 74 James Godfrey got this early! 🌞 

The first to send us the correct answer for today’s mind stretcher for a shout-out with the answer tomorrow. Just send us the answer and your name to [email protected] or reply to the email.

If you have any uplifting stories and experience you might want to share, send those over to [email protected] for the chance to be featured