News / Science & Technology

    Lionfish Threaten Atlantic Reefs

    A lionfish is seen on the reefs off Roatan, Honduras in this picture taken May 5, 2010. Native to Indo-Pacific waters, lionfish have invaded the Caribbean because of the aquarium trade and are gobbling up native species but have no predators in the region, so their population is exploding.
    A lionfish is seen on the reefs off Roatan, Honduras in this picture taken May 5, 2010. Native to Indo-Pacific waters, lionfish have invaded the Caribbean because of the aquarium trade and are gobbling up native species but have no predators in the region, so their population is exploding.
    VOA News
    Coral reefs in the Caribbean and along the U.S. Atlantic coast are being threatened by a growing population of voracious and invasive lionfish.

    The red-striped predator, native to the Indian and Pacific oceans, is a popular aquarium fish, and was likely released into Atlantic waters in the early 1990s. With no natural predators there, the lionfish quickly multiplied, reducing native fish populations by up to 80 percent.

    Researchers from Oregon State University recently participated in an expedition to an artificial reef about 90 meters deep off the Florida coast. They were surprised to find a large number of unusually large lionfish - about half a meter long.

    OSU research fellow Stephanie Green warns that they could migrate to shallower depths and eat many of the fish there, as well. In addition, in many species, large fish can reproduce more efficiently than smaller ones. Green says the control measures being used to reduce lionfish populations at shallower depths - catch them and let people eat them - are not as practical in deeper waters.

    While OSU scientists continue to look for ways to combat the lionfish, researchers express concern that the invasion, along with overfishing, pollution and the warming ocean, could be too much for the reef ecosystems to survive.

    You May Like

    Multimedia Obama Calls on Americans to Help the Families of Its War Dead

    In last Memorial Day of his presidency, Obama lays wreath at the Tomb of the Unknown Soldier at Arlington National Cemetery

    The Strife of the Party: Will Trump Permanently Alter Republicans?

    While billionaire mogul's no-holds-barred style, high-energy delivery are what rocketed him to nomination, they also have created rift between party elites and his supporters

    China's Education Reforms Spark Protest

    Beijing is putting a quota system in place to increase the number of students from poor regions attending universities

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Chinese-Americans Heart Trump, Bucking National Trendi
    X
    May 27, 2016 5:57 AM
    A new study conducted by three Asian-American organizations shows there are three times as many Democrats as there are Republicans among Asian-American voters, and they favor Hillary Clinton over Donald Trump. But one group, called Chinese-Americans For Trump, is going against the tide and strongly supports the business tycoon. VOA’s Elizabeth Lee caught up with them at a Trump rally and reports from Anaheim, California.
    Video

    Video Chinese-Americans Heart Trump, Bucking National Trend

    A new study conducted by three Asian-American organizations shows there are three times as many Democrats as there are Republicans among Asian-American voters, and they favor Hillary Clinton over Donald Trump. But one group, called Chinese-Americans For Trump, is going against the tide and strongly supports the business tycoon. VOA’s Elizabeth Lee caught up with them at a Trump rally and reports from Anaheim, California.
    Video

    Video Reactions to Trump's Success Polarized Abroad

    What seemed impossible less than a year ago is now almost a certainty. New York real estate mogul Donald Trump has won the number of delegates needed to secure the Republican presidential nomination. The prospect has sparked as much controversy abroad as it has in the United States. Zlatica Hoke has more.
    Video

    Video Drawings by Children in Hiroshima Show Hope and Peace

    On Friday, President Barack Obama will visit Hiroshima, Japan, the first American president to do so while in office. In August 1945, the United States dropped an atomic bomb on the city to force Japan's surrender in World War II. Although their city lay in ruins, some Hiroshima schoolchildren drew pictures of hope and peace. The former students and their drawings are now part of a documentary called “Pictures from a Hiroshima Schoolyard.” VOA's Deborah Block has the story.
    Video

    Video Vietnamese Rapper Performs for Obama

    A prominent young Vietnamese artist told President Obama said she faced roadblocks as a woman rapper, and asked the president about government support for the arts. He asked her to rap, and he even offered to provide a base beat for her. Watch what happened.
    Video

    Video Roots Run Deep for Tunisia's Dwindling Jewish Community

    This week, hundreds of Jewish pilgrims are defying terrorist threats to celebrate an ancient religious festival on the Tunisian island of Djerba. The festivities cast a spotlight on North Africa's once-vibrant Jewish population that has all but died out in recent decades. Despite rising threats of militant Islam and the country's battered economy, one of the Arab world's last Jewish communities is staying put and nurturing a new generation. VOA’s Lisa Bryant reports.
    Video

    Video Meet Your New Co-Worker: The Robot

    Increasing numbers of robots are joining the workforce, as companies scale back and more processes become automated. The latest robots are flexible and collaborative, built to work alongside humans as opposed to replacing them. VOA’s Tina Trinh looks at the next generation of automated employees helping out their human colleagues.
    Video

    Video Wheelchair Technology in Tune With Times

    Technologies for the disabled, including wheelchair technology, are advancing just as quickly as everything else in the digital age. Two new advances in wheelchairs offer improved control and a more comfortable fit. VOA's George Putic reports.
    Video

    Video Baby Boxes Offer Safe Haven for Unwanted Children

    No one knows exactly how many babies are abandoned worldwide each year. The statistic is a difficult one to determine because it is illegal in most places. Therefore unwanted babies are often hidden and left to die. But as Erika Celeste reports from Woodburn, Indiana, a new program hopes to make surrendering infants safer for everyone.
    Video

    Video California Celebration Showcases Local Wines, Balloons

    Communities in the U.S. often hold festivals to show what makes them special. In California, for example, farmers near Fresno celebrate their figs and those around Gilmore showcase their garlic. Mike O'Sullivan reports that the wine-producing region of Temecula offers local vintages in an annual festival where rides on hot-air balloons add to the excitement.
    Video

    Video US Elementary School Offers Living Science Lessons

    Zero is not a good score on a test at school. But Discovery Elementary is proud of its “net zero” rating. Net zero describes a building in which the amount of energy provided by on-site renewable sources equals the amount of energy the building uses. As Faiza Elmasry tells us, the innovative features in the building turn the school into a teaching tool, where kids can't help but learn about science and sustainability. Faith Lapidus narrates.

    Special Report

    Adrift The Invisible African Diaspora