The signs appeared practically overnight. They'd been planted anywhere and everywhere—in front of homes, along sidewalks, around the neighborhood. Each featured just a few uplifting words in simple black type: "Don't Give Up", "You Are Not Alone", "We Will Get Through". The residents in Newberg, Oregon, had suffered huge loss from a major tornado this year, so the town of 25,000 instantly understood the messages. For days, what no one could figure out was who had planted them.

Amy Wolff had. At first, she didn't want anyone to connect her to them. For one thing, the 36-year-old mother of two didn't really feel it was her place to weigh in. However, losing her brother in an accident several years earlier had led her to do so. She planted the signs anonymously because she wanted them to be about their message, not any one person. It was compassion(同情) for compassion's sake. "I couldn't just do nothing," says Wolff.

Yet as Wolff saw the deep chord her signs struck with her neighbors, she decided to step forward to share her message publicly. Instantly, her inbox was flooded with requests for more signs.

That was in May 2017.Since then, the Don't Give Up Movement has spread from Newberg to the hearts and yards of people in every state and several countries. The signs have morphed(变化) into wristbands, bumper stickers, pins, stamps, etc. One of the most heartening elements of the movement is that it has gone viral in a remarkably human way. More and more people have taken action, planting the signs in their lawns, taking selfies, and then posting them to share.

Aware of the added emotional challenges isolation brings under the cloud of COVID-19, the Don't Give Up Movement has since offered to send letters of support to anyone in quarantine who needs it. The group received about 400 requests in just 24 hours. A young woman wrote that she struggled with mental illness and that shelter-in-place rules were especially hard on her and her family; she asked whether the Don't Give Up group could send her relatives a cheerful note. Wolff's message is about to grow yet again.

Helen was five years old when she made the trip from her homeland to the United States of America with her mother, sister, and brother. Helen grew up hearing many terrible stories about people who were injured in the war. So as a child, Helen was eager to become a nurse to help those people. And indeed, she became one.

In early 1991, her operating room manager at the University of Virginia said, "Helen, I'd like you to take on a small project." "Okay," Helen agreed. "What's up?" Her manager replied, "Our nineteen operating rooms here are generating too much medical waste. Clean stuff that haven't been used. With your twenty years, working in the operating room, you have the knowledge and experience to figure out what to do with them all. "

So for a year, Helen collected clean medical supplies from all their operating rooms and donated them to missions (布道所). She researched the issue of medical waste. She was surprised to find that more than 2. 4 million tons of hospital waste is generated in the USA annually, with the operating rooms being the largest waste generators. "This is valuable waste, which can be utilized again rather than just being thrown away," she said.

Helen worked four ten-hour days in the operating room, and then spent countless hours networking with people on behalf of missions. Before she could say, "How did I get myself into this?" She had formed Medical Equipment Recovery of Clean Inventory (物品清单)(MERCI). For years, she sorted supplies after work, every day including weekends. Gradually MERCI had a steady stream of volunteers helping to sort, and the results were beyond their wildest imaginations. Since Helen started her "small project", MERCI has sorted more than 350 tons of medical supplies valued at ＄75 million, which have been sent all over the world and helped many people.

And now, Helen still leads a very busy life, but she thinks what she has been doing is meaningful.

    How do you prove you really are who you say you are? Maybe you have many ways to prove your identity: a birth certificate, a driver's license, a Social Security card, or a passport.

    But imagine that you are one of the one billion people in the world­most of them among the poorest­who have no official identification. No birth certificates. No official ID documents. Nothing. Without a way to prove who you are, you would face huge problems: going to school, seeing a doctor, getting a bank account...

    For the last decade, NandanNilekani has been working to make the world's invisible people visible by giving them access to official identification. One of India's leading technology experts, Nandan joined the government to lead the launch of India's national biometric ID system, which uses fingerprints and other biological characteristics to check the identities of the country's more than 1.3 billion residents. This ID system, known as Aadhaar (Hindi for "foundation"), is the world's largest biometric identification system and has become a valuable government platform for delivering social welfare programs and other government services.

    Now, Aadhaar has enrolled nearly all residents of India. With a trustworthy system to check identities of beneficiaries for everything from pensions to food moneies, the government has been able to save billions of dollars because of reduced cheating and dishonesty.

    Of course, India's ID system has not been without controversy. There were many privacy concerns, including criticism that the Aadhaar system was a mass monitoring tool and that personal data would be misused. Last year, a landmark decision by the Supreme Court of India found that the program did not violate the privacy rights of the country's residents. But in order to prevent misuse of personal data, the court placed tight limits on how the ID system could be used and shared.

    According to the latest data by the World Bank, there are one billion people in the world without an official proof of identity, including 45 percent of the population in sub­Saharan Africa and 17 percent of South Asia's population.

    Thanks to the work Nandan is doing, the world is moving closer to the day when everyone will have access to an official ID. The sooner we can achieve this goal, the sooner the world's poorest residents will not only be able to prove who they are, but also realize their dreams for better lives.