Eighteen-year-old Alessandra Izaguirre is part of a massive grassroots effort to help Venezuela after devastating earthquakes.

Two powerful earthquakes have rocked Venezuela, killing at least 188 people and trapping at least 200 in buildings.

With concern and confusion over how the federal government will respond to disasters this summer, aid groups are readying to expand the ways they help communities after hurricanes, fires and other storms.

Dozens who fled the collapse of a condominium tower in South Florida escaped with their lives, but little else.