• A glass-bottomed boat glides along water in Silver Springs, Fla. The springs, once a major tourist destination, have declined both in volume and in water quality.
    Greg Allen / NPR
    5:24pm Apr 13, 2013
    Science Science Environment

    Now Endangered, Florida's Silver Springs Once Lured Tourists

    Countless movies were filmed there, including Tarzan and Creature From the Black Lagoon. With its wildlife and freshwater springs, Silver Springs in Central Florida was one of the state's most popular tourist destinations. Those waters have receded now as the delicate ecosystem suffers from problems that threaten the entire state.
  • 1:03pm Apr 12, 2013
    Science Science Environment

    Monitoring the Monarchs

    Last month monarch butterflies began an annual northward journey from their overwintering habitat in Mexico. Monarch expert Lincoln Brower discusses the dwindling monarch populations, and explains how habitat loss in Mexico and a decline in milkweed plant numbers in the U.S. may be harming the familiar orange and black fliers.
  • This bur oak, called "The Big Tree" by Missouri locals, has been around for centuries. When a drought hit the state last year, the community came together to offer help and water for the iconic tree.
    Courtesy of Christopher Starbuck
    10:52am Apr 04, 2013
    Environment Environment

    In Missouri, Days Of Drought Send Caretakers To One 'Big Tree'

    Before the American Revolution, a huge tree has been standing in central Missouri, growing to 90 feet tall. The beloved bur oak, which everybody calls "The Big Tree," has survived all kinds of punishments during 350 years on the prairie. But last year's record drought was rough on the tree, causing it to wilt and alarming two locals who nursed it back to health.
  • Spilled crude oil is seen in a drainage ditch near evacuated homes near Starlite Road in Mayflower, Ark., on March 31. An Exxon Mobil pipeline carrying Canadian crude oil was shut off after it ruptured March 29, causing an evacuation of 22 homes.
    Jacob Slaton / Reuters/Landov
    10:45am Apr 04, 2013
    National National Science Environment

    Arkansas Oil Spill Sheds Light On Aging Pipeline System

    More than half of the nation's pipelines were built before 1970. In fact, ExxonMobil's Pegasus pipeline, which burst Friday in Mayflower, Ark., is 65 years old. According to federal statistics, pipelines have on average 280 significant spills a year. Most aren't big enough to make headlines.
  • 2:57pm Apr 02, 2013
    Science Science Environment

    The Buzz On Bees: Why Many Colonies Are Collapsing

    Bees have been dying off in increasing numbers over the past few years. Experts say that habitat loss and disease are the biggest culprits, and some believe that pesticides are to blame. NPR science correspondent Dan Charles explains the possible causes and what is being done to stop this trend.
  • European bison, or wisents, keep a safe distance from human visitors to their enclosure on the property of Prince Richard of Sayn-Wittgenstein-Berleburg in Germany's densely populated state of North Rhine-Westphalia.
    Soraya Sarhaddi Nelson / NPR
    5:17pm Apr 01, 2013
    World News World News Environment

    German Prince Plans To Put Bison Back In The Wild

    The prince's dream of reintroducing European bison, or wisent, into Germany's most densely populated state will soon be reality. It will be the first time in nearly 300 years that these creatures will roam Western Europe. But not everyone is as excited as the prince.
  • 9:26am Mar 30, 2013
    Science Science Environment

    The Secret Life Of the Sonoran Desert

    The Sonoran Desert, which spans some 100,000 square miles in southwestern North America, is one of the most diverse desert ecosystems in the world. Host Ira Flatow and guests discuss some lesser known desert creatures, and explore the secret life of that American southwest icon, the saguaro cactus.