How cities are searching for solutions among massive mounds of data

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.

As Beijing grapples with pollution caused in large part by the increase in cars on the roads, a tech-based solution has appeared in the form of forward-thinking bicycles. The Chinese bike-sharing system, spearheaded by several startups, allows commuters to find a bike using GPS, pay for it using an app, and drop it off upon arriving to their destination, wherever that may be. A mix of private investment and government support has allowed this market to thrive.

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.

Bozeman, Montana, a city grappling with how to plan for growth in a smart and strategic way, is looking to learn from Fort Collins, Colorado. The two cities are similar in terms of the features that make them appealing: once low-cost, small college towns with beautiful scenery and lots of space. Now, Fort Collins’ population has soared, and critics say development could have been smarter. Bozeman is learning lessons about planning and inclusivity, hoping not to make the same mistakes.

The focus on sound comes at a time when open kitchens and industrial hard-surface designs entice diners’ eyes, but might strain their ears.

Pennsylvania law is preventing a Philadelphia neighborhood from converting an empty lot into a solar farm, but community members are working to fight against this by citing neighboring states that are seeing positive impact from similar projects. One such project is in Massachusetts where shared solar energy systems is helping to offset "80 percent of the power needs of a nearby assisted living facility, an affordable housing development, a family-owned hardware store and a non-profit serving those with disabilities."

Mobile home owners in Colorado are beginning to own their own communities due in part to legislation that is making it easier to do so. Resident-owned communities preserve the affordable housing stock, which manufactured home communities make up a large percentage of.

As building developers in Kenya design new structures that are more environmentally friendly and sustainable, they can look to the Garden City Mall in Nairobi as a successful example. This mixed-use development with shopping, residential, and office spaces uses solar energy, which helps cut energy costs by over 30 million shillings each year. The mall also was the first in the region to receive an international green building certification.

Two insurance companies, Discovery and Dialdirect, implemented a smartphone app for drivers to report potholes in their city. The companies then fill the potholes and brand them with their logos.

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.