You probably don't know their names, but 30 years ago, they saved Europe.

On April 26, 1986, the world experienced the worst ever nuclear disaster.

It occurred at the Chernobyl Nuclear Power Plant, located in Ukraine. Immediately after the meltdown, dozens died. 30 years later, the number of lives lost to the plant's radiation lies somewhere in the tens of thousands.

If not for the work of three brave men, we may have lost millions of lives instead.


The plant, severely damaged, four days after the disaster. Photo by AFP/Getty Images.

10 days after the Chernobyl meltdown, engineers learned of a new threat: nuclear steam explosions.

The plant's water-cooling system had failed, and a pool had formed directly under the highly radioactive reactor. With no cooling, it was just going to be a matter of time before a lava-like substance melted through the remaining barriers, dropping the reactor's core into the pool. If this would have happened, it might have set off steam explosions, firing radiation high and wide into the sky, spreading across parts of Europe, Asia, and Africa.

"Our experts studied the possibility and concluded that the explosion would have had a force of three to five megatons," said Soviet physicist Vassili Nesterenko. "Minsk, which is 320 kilometers from Chernobyl, would have been razed and Europe rendered uninhabitable."

Soviet engineers test waters for radiation within the 30-kilometer "forbidden zone." Photo by AFP/Getty Images.

Three brave men volunteered to dive under the plant and release a critical pressure valve.

Just one available man knew the location of the release valve. His name was Alexei Ananenko, and he was one of the plant's engineers. He along with fellow engineer Valeri Bezpalov and shift supervisor Boris Baranov were asked to take on what amounted to a suicide mission.

The men were told they could refuse the assignment, but Ananenko later said, "How could I do that when I was the only person on the shift who knew where the valves were located?"

Decades after the disaster, a visitor photographs a memorial built for the first responders of Chernobyl. Photo by Sergei Supinsky/AFP/Getty Images.

The men released the valve in time and, in doing so, saved the world from a disaster that would have been exponentially worse than the initial explosion.

Over the following days, more than 5 million gallons of water were released from below the plant. A report later confirmed that without the work of Ananeko, Bezpalov, and Baranov, a nuclear explosion would have taken place, turning hundreds of square miles into an inhabitable radioactive wasteland.

A nuclear hazard warning is seen in Kopachi, one of the many villages close to the Chernobyl plant buried after the disaster to reduce the spread of radiation. Photo by Daniel Berehulak/Getty Images.

By the time the men surfaced from under the reactor, all three were showing signs of severe radiation poisoning. Tragically, none of them survived for more than a few weeks.

Like other victims of the Chernobyl disaster, the three men were buried in lead coffins.

What makes their actions unique in comparison to those of the disaster's first responders is that these men were warned outright of the danger radiation posed — firefighters weren't given any background on radiation poisoning before running to put out the flames. They're all heroes, but these three men knew they'd die; they did it anyway, saving the lives of hundreds of thousands.

Their story has been mostly lost to time, with references only popping up in books about catastrophe, danger, and disaster. But the names of these three men shouldn't be forgotten.

A monument is dedicated to the lives of all those lost in the Chernobyl disaster. Photo by Boris Cambreleng/AFP/Getty Images.

Alexei Ananenko, Valeri Bezpalov, and Boris Baranov didn't prevent the Chernobyl disaster; they prevented something much, much worse.

Their story really makes you think about the label "hero." For some, like the three Chernobyl divers, heroics come quietly as the result of a quashed threat. For others, like the first responders at Chernobyl or Fukushima, during 9/11, or in response to other terrorist attacks, heroics are the result of running toward danger so that others may run away from it.

The truth is that heroes are all around us. Teachers, health care workers, and just everyday people are and have the capacity to be heroes in their own right. No capes needed, just a little faith in the human spirit.

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Shopping sustainably is increasingly important given the severity of the climate crisis, but sometimes it's hard to know where to turn. Thankfully, Amazon is making it a little easier to browse thousands of products that have one or more of 19 sustainability certifications that help preserve the natural world.

The online retailer recently announced Climate Pledge Friendly, a program to make it easier for customers to discover and shop for more sustainable products. To determine the sustainability of a product, the program partnered with third-party certifications, including governmental agencies, nonprofits, and independent labs.

With a selection of items spanning grocery, household, fashion, beauty, and personal electronics, you'll be able to shop more sustainably not just for the holiday season, but throughout the year for your essentials, as well.

You can browse all of the Climate Pledge Friendly products here, labeled with an icon and which certification(s) they meet. To get you on your way to shopping more sustainably, we've rounded up eight of our favorite Climate Pledge Friendly-products that will make great gifts all year long.

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Jack Wolfskin Women's North York Coat

Give the gift of warmth and style with this coat, available in a variety of colors. Sustainability is built into all Jack Wolfskin products and each item comes with a code that lets you trace back to its origins and understand how it was made.

Bluesign: Bluesign products are responsibly manufactured by using safer chemicals and fewer resources, including less energy, in production.


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Amazon All-new Echo Dot (4th Gen)

For the tech-obsessed. This Alexa smart speaker, which comes in a sleek, compact design, lets you voice control your entertainment and your smart home as well as connect with others.

Reducing CO2: Products with this certification reduce their carbon footprint year after year. Certified by the Carbon Trust.


Amazon

Burt's Bees Family Jammies Matching Holiday Organic Cotton Pajamas

Get into the holiday spirit with these fun matching PJs for the whole family. Perfect for pictures that even Fido can get in on.

Global Organic Textile Standard: This certifies each step of the organic textile supply chain against strict ecological and social standards. Each product with this certification contains 95%-100% organic content.

Amazon

Naturistick 5-Pack Lip Balm Gift Set

With 100% natural ingredients that are gentle on ultra-sensitive lips, this gift is a great gift for the whole family.

Compact by Design (Certified by Amazon): Products with this certification are packaged without excess air and water, which reduces the carbon footprint of shipping and packaging.


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Arus Women's GOTS Certified Organic Cotton Hooded Full Length Turkish Bathrobe

For those who love to lounge around, this full-length organic cotton bathrobe is the way to go. Available in five different colors, it has comfortable cuffed sleeves, a hood, pockets, and adjustable belt.

Global Organic Textile Standard: This certifies each step of the organic textile supply chain against strict ecological and social standards. Each product with this certification contains 95%-100% organic content.

Amazon

L'Occitane Extra-Gentle Vegetable Based Soap

This luxe soap, made with moisturizing shea butter and scented with verbena, is perfect for the self-care obsessed.

Compact by Design (Certified by Amazon): Products with this certification are packaged without excess air and water, which reduces the carbon footprint of shipping and packaging.

Amazon

Goodthreads Men's Sweater-Knit Fleece Long-Sleeve Bomber

For the fashionable men in your life, this fashion-forward knit bomber is an excellent choice. The sweater material keeps it cozy and warm, while the bomber jacket-cut, zip front, and rib-trim neck make it look elevated.

Recycled Claim Standard 100: Products with this certification use materials made from at least 95% recycled content.

Amazon

All-new Fire TV Stick with Alexa Voice Remote

Make it even easier to access your favorite movies and shows this holiday season. The new Fire TV Stick lets you use your voice to search across apps. Plus it controls the power and volume on your TV, so you'll never need to leave the couch! Except for snacks.

Reducing CO2: Products with this certification reduce their carbon footprint year after year. Certified by the Carbon Trust.

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If the past year has taught us nothing else, it's that sending love out into the world through selfless acts of kindness can have a positive ripple effect on people and communities. People all over the United States seemed to have gotten the message — 71% of those surveyed by the World Giving Index helped a stranger in need in 2020. A nonprofit survey found 90% helped others by running errands, calling, texting and sending care packages. Many people needed a boost last year in one way or another and obliging good neighbors heeded the call over and over again — and continue to make a positive impact through their actions in this new year.

Upworthy and P&G Good Everyday wanted to help keep kindness going strong, so they partnered up to create the Lead with Love Fund. The fund awards do-gooders in communities around the country with grants to help them continue on with their unique missions. Hundreds of nominations came pouring in and five winners were selected based on three criteria: the impact of action, uniqueness, and "Upworthy-ness" of their story.

Here's a look at the five winners:

Edith Ornelas, co-creator of Mariposas Collective in Memphis, Tenn.

Edith Ornelas has a deep-rooted connection to the asylum-seeking immigrant families she brings food and supplies to families in Memphis, Tenn. She was born in Jalisco, Mexico, and immigrated to the United States when she was 7 years old with her parents and sister. Edith grew up in Chicago, then moved to Memphis in 2016, where she quickly realized how few community programs existed for immigrants. Two years later, she helped create Mariposas Collective, which initially aimed to help families who had just been released from detention centers and were seeking asylum. The collective started out small but has since grown to approximately 400 volunteers.