"All are dependent on collaboration between Sudan and South Sudan and assistance from the international community for proper transportation facilities, food, water, healthcare and other essential services and most do not have the means to transport themselves to South Sudan and are running out of means to support themselves, " it said.

CNN: U.N.: Thousands stranded at Sudan way station

At the federal level, one innovative solution can be found in the Partnership for Sustainable Communities, a collaboration of the Department of Housing and Urban Development ( HUD), the Department of Transportation ( DOT), and the Environmental Protection Agency ( EPA).

FORBES: Smart Communities will Build Green Infrastructure

The Presidents welcomed the launch of the U.S.-Chile Energy Business Council, a new energy partnership focused on clean energy infrastructure to advance clean energy development, identify business and investment opportunities in both countries, and pursue collaboration on energy infrastructure resiliency, technology innovation, and incorporation of energy efficiency and renewables in industry, transportation, building and public sectors.

WHITEHOUSE: President Obama on the United States and Latin America

"Physical inactivity is an issue that crosses many sectors and will require collaboration, coordination and communication with multiple partners, " he wrote, citing specifically city and community planners, transportation engineers, schools, parks and recreation officials and the media.

CNN: STORY HIGHLIGHTS