Earth Day’s Forgotten Mandate: Population, Immigration, and the Degradation of America’s Environment

By Henry Barbaro

At Earth Day’s inception, population growth was central to the conversation, and was linked to rising pollution, resource depletion, and habitat loss.

Dark Skies Diminished with Sky-High Immigration

By Henry Barbaro

As population density increases, so too does light pollution, which has become an increasingly widespread environmental concern. Light pollution is defined as the alteration of natural nighttime lighting by artificial sources.

Chesapeake Bay Sprawl Study: What is at stake and what to do

By Leon Kolankiewicz

Without immigration-reduction, population growth and sprawl will continue to drive biodiversity losses and degrade Chesapeake Bay’s water quality, commercial fisheries, and overall ecological health.

Mass Immigration Is Pushing Right Whales Toward Extinction

By Henry Barbaro

The right whale is struggling to survive because of ongoing ship strikes and entanglement in fishing gear. With only about 380 left, right whales are one of the most endangered animals on Earth.

A Growing Population, a Shrinking River

By Henry Barbaro

If current trends continue, the Colorado River system will lose its remaining resilience to withstand further dry periods. The combination of declining flows and rising demand threatens the region’s rivers, wetlands, fish, and wildlife.

Mass Immigration is Pushing Wildlife to the Margins

By Henry Barbaro

Wildlife conflicts are not as much the result of animals encroaching on humans, but of people expanding into wildlife space. Human population growth narrows migration corridors, reduces buffer zones, and displaces habitat. As a result, encounters that once would have occurred deep in forests or remote valleys now happen in neighborhoods and school zones.

Drivers of Decline: Environmental Stressors of Chesapeake Bay

By Leon Kolankiewicz

As more people move into the Chesapeake Bay region, development has turned forests, farms and other landscapes into subdivisions, shopping centers and parking lots. As more people have moved in, the health of the Bay has, inevitably, declined.

Overloading Chesapeake Bay: Population Growth Stresses America’s Largest Estuary

By Leon Kolankiewicz

Over the past twenty-five years, NumbersUSA has published numerous scientific reports on the causes and consequences of sprawl in the United States. Our most recent study quantifies ecological decline in the Chesapeake Bay and its watershed over the past three decades. Looking forward, we explore a path toward ecological sustainability centered on stabilizing the region’s population through reduced immigration.

Watershed Woes

By Philip Cafaro

Despite half a century of efforts to improve water quality and restore fisheries in America’s Chesapeake Bay, its ecological health continues to decline. A new study from NumbersUSA quantifies this ecological decline within the Chesapeake Bay watershed, explores its causes, and discusses possible futures.