One specific issue that both the Democratic Party and the Green Party share is the concern about climate change. Both parties believe that the government should take strong action to reduce greenhouse gas emissions and promote clean energy sources like solar and wind power. They worry about how climate change affects the environment and people's health, and they want to create more jobs in green energy.
However, the Democratic Party's approach is usually more moderate and they often look for solutions that work within the existing system, while the Green Party aims for more radical changes and a quicker transition to a sustainable economy. Even though they may argue about how to get there, they both think climate change is a really big problem that needs to be addressed.