News / Science & Technology

Great Barrier Reef Shows Signs of New Damage

Australian Institute of Marine Science image shows bleaching on a coral reef at Halfway Island in Australia's Great Barrier Reef which lost more than half its coral cover in the past 27 years, October 2, 2012.
Australian Institute of Marine Science image shows bleaching on a coral reef at Halfway Island in Australia's Great Barrier Reef which lost more than half its coral cover in the past 27 years, October 2, 2012.
VOA News
A new study has found that Australia's Great Barrier Reef, the world's largest living organism, has lost more than half its coral in the past three decades.

Scientists from the Australian Institute of Marine Science say damage from cyclones and a population explosion of predatory "crown of thorns" starfish are mostly to blame for devastating the World Heritage Site. To a lesser extent, coral bleaching resulting from ocean warming was blamed.

Jamie Oliver, an AIMS scientist who helped write the report, says reducing the population of starfish that feed on the coral is the best way to prevent a further destruction to the reef.

"We believe that if we can take action on one of the things we can directly control, the crown of thorns starfish, it may leave the reef in a position where it can better withstand some of these climatic impacts, such as cyclones and coral bleaching," said Oliver.

Watch Video here: Crown of thorns starfish

But the report also said that easing global climate change and improving water quality around the reef were essential for its future. Without intervention, scientists say the amount of coral could halve again by 2022.

The Great Barrier Reef covers an area of about 345,000 square kilometers off the coast of northeast Australia.

Though the report said coral loss at the reef has been running at about .53 percent annually since 1985, it said that most of the damage had occurred in the southern regions and that the relatively pristine northern region is relatively stable.

You May Like

Sunni-Shi’ite Divide Threatens Middle East Stability

Analysts say ancient dispute that traces back to Islamic Revolution is fueling modern day unrest More

Shifting Demographics Lie Beneath Racial Tensions in Ferguson

As Missouri suburb morphed from majority white to majority black, observers say power structure remained static More

Video Artists Shun Russia's Profanity Law

Restriction is toughest since Soviet era, though critics reject move as patronizing and ineffective act of censorship in line with a string of conservative morality laws More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Native Bees May Help Save Cropsi
X
Deborah Block
August 22, 2014 12:23 AM
U.S. President Barack Obama has called for a federal strategy to promote the health of bees that have been declining. The honeybee has been waning due to parasites, disease and pesticides. Wild bees may be used to take over their role as crop pollinators. Scientists first need to learn a lot more about wild bees, says biologist Sam Droege, who is pioneering the first national inventory on native bees. VOA’s Deborah Block went to his research laboratory in Beltsville, Maryland, to bring you more.
Video

Video Native Bees May Help Save Crops

U.S. President Barack Obama has called for a federal strategy to promote the health of bees that have been declining. The honeybee has been waning due to parasites, disease and pesticides. Wild bees may be used to take over their role as crop pollinators. Scientists first need to learn a lot more about wild bees, says biologist Sam Droege, who is pioneering the first national inventory on native bees. VOA’s Deborah Block went to his research laboratory in Beltsville, Maryland, to bring you more.
Video

Video US Defense Officials Plan for Long-Term Strategy to Contain Islamic State

U.S. defense officials say American air strikes in Iraq have helped deter Islamic State militants for the time being, but that a broad international effort is needed to defeat the extremists permanently. Defense Secretary Chuck Hagel warned Thursday that the group formerly known as the Islamic State in Iraq and the Levant, or ISIL, is better organized, and financially and militarily stronger than any other known terrorist group. Zlatica Hoke has more.
Video

Video Drug-Resistant Malaria Spreads in Southeast Asia

On Thailand’s border with Myanmar, also known as Burma, a malaria research and treatment clinic is stepping up efforts to eliminate a drug-resistant form of the parasite - before it spreads abroad. Steve Sandford reports from Mae Sot, Thailand.
Video

Video Gaza Conflict, Hamas Popularity Challenge Abbas

The Palestinian unity government of Mahmoud Abbas has failed to convince Hamas to agree to Egyptian-negotiated terms with Israel on a Gaza cease-fire. VOA State Department Correspondent Scott Stearns reports on what the Gaza conflict means for President Abbas, with whom U.S. officials have worked for years on a two-state solution to the Israeli-Palestinian conflict.
Video

Video Nigeria's 'Nollywood' Movie Industry Rolls in High Gear

Twenty years after its birth in a video shop in Lagos, Nigeria's "Nollywood" is one of the most prolific film industries on earth. Despite low budgets and whirlwind production schedules, Nigerian films are wildly popular in Africa and industry professionals say they hope, in the future, their films will be as great in quality as they are in quantity. Heather Murdock has more for VOA from Lagos.
Video

Video UN Launches 'Biggest Aid Operation in 30 Years' in Iraq

The United Nations has launched what it describes as one of the biggest aid operations in 30 years in northern Iraq, as hundreds of thousands of refugees flee the extremist Sunni militant group calling itself the Islamic State. As Kurdish and Iraqi forces battle the Sunni insurgents, the fighting has forced more people to flee their homes. Kurdish authorities say the international community must act now to avert a humanitarian catastrophe. Henry Ridgwell reports for VOA from London.
Video

Video Cambodian American Hip Hop Artist Sings of Personal Struggles

A growing underground movement of Cambodian American hip hop artists is rapping about the struggles of living in urban America. Most, if not all of them, are refugees or children of refugees who came to the United States from Cambodia to escape the Khmer Rouge genocide of the 1970s. Through their music, the artists hope to give voice to immigrants who have been struggling quietly for years. Elizabeth Lee reports from Long Beach, California.
Video

Video African Media Tries to Educate Public About Ebola

While the Ebola epidemic continues to claim lives in West Africa, information technology specialists, together with radio and TV reporters, are battling misinformation and prejudice about the disease - using social media to educate the public about the deadly virus. VOA’s George Putic has more.

AppleAndroid