Scientists just figured out how to turn CO2 back into coal

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.

The rapid development of emerging economies across Asia and Africa is lifting hundreds of millions of people out of poverty - but there is much debate as to how to best structure this growth. If these economies evolve in the same way as in the West - with unchecked, excessive resource consumption and heavy pollution - the planet may be on the fast track to disaster. Earthrise explores how these nations can grow sustainably using improved, eco-conscious technologies like renewable energy and eco-friendly farming practices.

With the prices of solar technology dropping and the opportunity to save drastically on energy usage and costs, businesses and organizations across the country are investing more in solar infrastructure for their buildings and facilities. The Better Buildings Initiative of the US Department of Energy is helping by providing guidance and documenting effective approaches and financing for renewables installations - from hotels, to schools, to big box retail.

Funded by federal grant money, the state, and the Office of Naval Research, Hawaii County public transit has developed its first hydrogen-powered shuttle bus. What’s been called the “fuel of the future,” hydrogen fuel cells create a power source that’s only emissions are clean water vapor. While a seemingly viable and scalable clean-energy source, such development and infrastructure requires large financial investments that many states have yet to prioritize.

Portland-based NGO, Micah Challenge USA, uses scripture to reach Evangelicals about climate change. The organization partners with legislation-making initiatives, travels to Christian colleges, and contacts national and local leaders urging them to join the Climate Solutions Caucus. Underpinning every initiative is a core strategy: climate change is causing people to suffer, especially those that are experiencing poverty, and as Christians, they are called to help the poor and end their suffering.

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."

The Women’s Collective is a nonprofit that works with more than 10,000 subsistence farmers in the Indian state of Tamil Nadu to promote food security using millets, a crop resilient to drought and climate change. For Pavitra, one of those farmers, she began cultivating the ancient grains in 2015 and now has more than enough food to feed her family year-round. However, there’s a lack of public investment in millet production and machinery. And there’s no unified effort to create demand for millets: Some state governments lead the charge and in other states, it’s led by grassroots organizations.

Although some people are refusing to eat meat because of its environmental impact, their pets might not. Dogs and cats account for 30 percent of the environmental impact of meat consumption in the U.S. Yet, pets don't have to eat meat. They can eat insect-based diet that give them the same amount of protein as meat. Switching one golden retriever alone, saves up to 4.4 million gallons of water per year. This story chronicles companies that are making the switch to making insect-based food forpets, and some of the challenges they face.

Athletes are mobilizing young voters and raising awareness about the perils of climate change. The athletes have been able to use their large social media platforms and following to educate people, urge them to act, and reach out to elected officials through a concerted effort by nonprofit Protect Our Winters (POW).

Solar energy is a clean, cheap, renewable, and land-efficient resource, making it a valuable technology to scale up in the face of climate concerns and clean energy. Diversifying the supply chain for creating and sourcing solar panels can help make solar energy more reliable when faced with geopolitical and human rights issues.