(04/16/2013) New York state officials say the state's prison population is expected to drop again this year by nearly 800 inmates.

The Department of Corrections will close two more prisons this year, bringing to a total of nine the number...

(04/25/2013) Once so numerous they darkened the sky for days while migrating, passenger pigeons arrived in this region in early May each year. Dr. Curt Stager and Martha Foley remember this once ubiquitous species wiped out by human hunting in the...

(04/18/2013) Everyone is familiar with how bees and insects distribute pollen from one flower to another, but that's not the only way to get the job done. Some night-blooming plants are pollinated by bats, when bright floral colors are invisible....

(05/02/2013) Dr. Curt Stager tells co-host Martha Foley why and how porcupines climb trees—and why it can be a dangerous job. Plus, what to do when one lives under (and gnaws on) your porch. Get up close, but not too close, to porcupines.

(05/09/2013) Spiders from big to tiny use their webs to snag and trap prey in fascinating ways. One spider even reels in tiny gnats that come to "roost" on the web. The silky constructions are wonders of engineering and construction. They're also...

(06/06/2013) Researchers have found that variations in the wingspan of cliff swallows has a measurable impact on their survival in a human-dominated environment. In this week's Natural Selections, Dr. Curt Stager and Martha Foley discuss...

(05/30/2013) Static electricity plays a role in getting pollen to come loose from the blossom and to stick to the pollinator. According to a recent study using petunias and bumblebees, British researchers observed that the flowers increase their...

(05/16/2013) The theory of continental drift—the idea that the continents are islands of rock adrift on the earth's molten core—first gained acceptance in the 1960s. Dr. Curt Stager and Martha Foley talk about the consequences of their extreme slow...

(06/13/2013) Our atmosphere is about 80 percent nitrogen. Martha Foley and Dr. Curt Stager explore the ways this common element and necessary component of all life forms interacts with the biosphere.