Why millions listen to this girl's advice

Austria rolled out the KlimaTicket, an annual pass that gives the holder access to all forms of public transportation in the country, to encourage increased use of public transport with an eye toward climate change mitigation. The uptake has exceeded expectations with 134,000 tickets sold within just the first two months, but it's still unclear what effect the program will have on the country's carbon emissions.

Copenhagen is a highly livable city, thanks to policies that focus on making streets safe and convenient to walk. The bigger the city, the worse it is to design urban spaces only with cars in mind, says planner and architect Jan Gehl. His top advice is to gather data about people and their movements, making pedestrians as visible in city planning as automobile traffic.

The World Health Organization estimates that $200 billion worth of productivity is lost every year due to untreated poor eyesight. Several organizations, such as EYElliance and Aravind Eye Hospital, are working to combat this problem by administering free vision tests and helping people who need glasses get them at an affordable rate.

Radar, lidar, and sensors guide the world’s first autonomous tram across Potsdam. While not yet commercially viable, the tram is an advancement in driverless technology. It can respond to road hazards faster than a human and runs on energy from wind and solar.

Based out of the city of Addis Ababa in Ethiopia, a live radio show is tackling the stigma around mental health care by combining their platform with those in the mental health care field. Not only does the radio show discuss psychological issues on air, but it also offers free and reduced-cost mental health services to those that serve as guests on the show.

To help essential workers navigate the notorious traffic of Bogota, the city built over 50 miles of an emergency bike network. The plan was in place before the arrival of coronavirus but the execution was sped up to meet the demands of increased bike usage. Other measures were also put into place to make the roads more bike and pedestrian-friendly: Reduced speed limits for cars, a 20 percent increase in private parking for bikes, and a bike registration system to deincentivize bike theft. Efforts to expand bike lanes not only eased traffic, they also helped relieve pressure on the overcrowded bus system.

An initiative on the Moscow metro system has posters on the train featuring cats and dogs that are looking for a home. Known as the “Tails and Paws” train, these animals come from 13 animal shelters in the city and riders can use their phone to scan the poster to learn more about the animals up for adoption. “It’s about forming a new culture of responsible attitude to animals,” says one of the workers at a shelter.

A coalition of groups advocating for young girls of color succeeded in winning new policies and financial support to combat sexual harassment on public transportation. By surveying middle and high school students about their experiences, the groups behind the "Not One More Girl" campaign convinced Bay Area Rapid Transit system officials to install posters, make reporting of incidents easier, and pay for non-police "transit ambassadors" and crisis intervention specialists to patrol trains.

The Kansas City Streetcar provides fare-free transportation for residents, which helps to get them downtown and promote more economic development. The fare-free streetcar also makes transit more equitable by removing barriers for low-income passengers and improving mobility for people with disabilities.

To increase awareness of cervical cancer and the cancer-preventing HPV vaccine, Al-Ansar radio shares information about the disease, the vaccine and works to dispel speculation and misinformation about vaccines in general to those in underserved and hard-to-reach areas, as they’re often hardest to get vaccinated.