The Speck air quality monitor costs $200, but is available to all through Pittsburgh's public library system. Carnegie Mellon University CREATE Lab hide caption

itoggle caption Carnegie Mellon University CREATE Lab

A bird covered in oil flaps its wings at Refugio State Beach, north of Goleta, Calif., on Thursday. More than 9,000 gallons of oil have been raked, skimmed and vacuumed from a spill that stretched across 9 miles of California coast, just a fraction of the sticky, stinking goo that escaped from a broken pipeline, officials said. Jae C. Hong/AP hide caption

itoggle caption Jae C. Hong/AP

Plankton collected in the Pacific Ocean with a 0.1mm mesh net. Seen here is a mix of multicellular organisms — small zooplanktonic animals, larvae and single protists (diatoms, dinoflagellates, radiolarians) — the nearly invisible universe at the bottom of the marine food chain. Christian Sardet/CNRS/Tara Expeditions hide caption

itoggle caption Christian Sardet/CNRS/Tara Expeditions

A morning's berry harvest from West Philadelphia's Ogden Orchard includes raspberries, gooseberries, currants, goumis and mulberries. Courtesy of Philadelphia Orchard Project hide caption

itoggle caption Courtesy of Philadelphia Orchard Project

Rancher Ross Frank worries that funding to fight fires in Western communities like Chumstick, Wash., has crowded out important land management work. Rowan Moore Gerety/Northwest Public Radio hide caption

itoggle caption Rowan Moore Gerety/Northwest Public Radio

The White House announced an action plan Tuesday aimed at reversing dramatic declines in pollinators like honeybees, which play a vital role in agriculture, pollinating everything from apples and almonds to squash. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images