In the United States, dogs and cats consume the dietary energy of 62 million people, which is about 20% of our population.
We will not make America great again if we can’t breathe the air, drink the water, or find mental refreshment and recreation in natural areas.
Humans appropriate about 40% of all terrestrial plant production for various purposes
As a first approximation, a large protected area will preserve more species than a small one.
Scientists are not merely a special interest group.
We continuously reset our perception of what nature is and where nature occurs, codifying degradation
An increasing body of scientific work suggests that a diverse world—what biologists call high biodiversity—is a healthier world
The rapidly growing human population and its global economy are not likely to improve matters for the rest of the biosphere.
With the advent of LED lights, nights are certain to get even brighter.
The most efficient way to preserve biodiversity in North America will be to insure the preservation of large tracts of habitat