News / Economy

Study: Roads Expanding Fast Worldwide, Better Planning Needed to Aid Food Output

FILE - A site manager from China Wuyi, Sinohydro and Shengeli Engineering Construction Group checks progress on Kenya’s Nairobi-Thika highway project, a $28 billion enterprise paid for by China, Kenya and the African Development Bank.
FILE - A site manager from China Wuyi, Sinohydro and Shengeli Engineering Construction Group checks progress on Kenya’s Nairobi-Thika highway project, a $28 billion enterprise paid for by China, Kenya and the African Development Bank.
Reuters

New roads long enough to girdle the Earth 600 times are expected to be built by 2050 and better planning is needed to protect the environment while also raising food production, a study showed on Wednesday.

The study in the journal Nature showed that roads can aid farmers, especially in developing nations where food production is held back by a lack of access to markets or to fertilizers and other technologies.

But too often, new roads slice through remaining wildernesses in the Amazon, New Guinea, Siberia or the Congo Basin, which are home to valuable species of animals and plants and help to slow climate change by storing greenhouse gases.

"While new roads can promote social and economic development, they can also open a Pandora's box of environmental problems," a team of scientists from Australia, Malaysia, the United States, Britain and Costa Rica wrote in the study.

The report's maps showed that 12 percent of the world land area could benefit from roads to help raise farm output with little environmental damage, such as areas of India, central Europe and Asia, North America and the Sahel in Africa.

New roads likely to be built by 2050 would total 250 million kilometers (155 million miles), a 60 percent gain from 2010 and long enough to encircle the planet more than 600 times, it said.

Lead author William Laurance, of James Cook University in Australia, told Reuters the maps were "just a starting point" for a wider debate about the economic impact of roads.

Many other local factors, such as keeping costs down by taking the shortest route, usually determine routes. Shorter roads also mean less pollution by vehicles.

"What we're attempting is to put road-building into a wider context," Laurance said. "There are a lot of local factors that will come into actual road planning — but one of the things that's been ignored so far is the 'big picture'."

Roads help GDP

Many other studies have shown that roads boost growth. A World Bank report this year about an expansion of the road network in Brazil since the 1960s found that "roads are shown to account for half of per capita GDP growth."

The maps tried to value the animals and plants in each region and gauge the amount of carbon stored in vegetation, a natural buffer against climate change. They also created an index to value agricultural production.

Stephen Perz, an expert at the University of Florida, said the quality of data available for creating such maps varied a lot from country to country but that the study could help "a broader effort to improve such maps."

"Governments routinely plan roads without adequate consultation with local people and construction often goes ahead with insufficient attention to minimizing the environmental effects," he wrote in a comment in Nature.

You May Like

Video Analysts: Beijing Parade a 'Bazaar' of Stolen Technology

Show commemorating victory over Japan in World War II involved long, medium and short range missiles, a range of tanks and 200 fighter aircraft More

Bernie Sanders Surge Reflects US Shift on Socialism

Although most analysts say it is unlikely he will get the Democratic nomination, Sanders' campaign opens up questions and issues that are otherwise marginalized More

Video On IS Frontline, Kurdish Fighters Ready for Offensive

Peshmerga soldiers say although they need more heavy artillery, they are poised to take the fight to the Islamic State extremists on their turf More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Drowned Migrant Toddler Photo Triggers European Outragei
X
Henry Ridgwell
September 04, 2015 11:36 AM
The harrowing picture of a drowned three-year-old Syrian boy washed up on a Turkish beach appears to have galvanized Europe’s leaders into doing more to address the refugee crisis. France, Germany and Italy issued a joint call Thursday for compulsory quotas of refugees for all EU states. But there were chaotic scenes in Hungary as police tried to force migrants off a train heading for Austria. Henry Ridgwell has more. And a caution, some of the images in this report may be disturbing.
Video

Video Drowned Migrant Toddler Photo Triggers European Outrage

The harrowing picture of a drowned three-year-old Syrian boy washed up on a Turkish beach appears to have galvanized Europe’s leaders into doing more to address the refugee crisis. France, Germany and Italy issued a joint call Thursday for compulsory quotas of refugees for all EU states. But there were chaotic scenes in Hungary as police tried to force migrants off a train heading for Austria. Henry Ridgwell has more. And a caution, some of the images in this report may be disturbing.
Video

Video Russians Observe 11th Anniversary of Beslan School Attack

This week, Russians have been observing the 11th anniversary of the attack by Islamic militants on a school in Russia's North Caucasus region that killed more than 330 hostages, including 186 children. The three-day siege and massacre that started on September 1, 2004 took place in Beslan, a town in the republic of North Ossetia, and is one of the bloodiest terrorist acts ever in Russia. VOA's Mike Richman reports.
Video

Video Native Americans Debate: Father Serra, Saint or Sinner?

Pope Francis will canonize an 18th century missionary to Spanish California during a papal visit to the United States this month.  But some Native Americans have criticized the elevation to sainthood of the missionary priest, Junipero Serra. VOA's Mike O’Sullivan has more from Los Angeles.
Video

Video Calais School Offers Another Face of Europe’s Migrant Crisis

Europe is facing mounting criticism over how it’s handling its biggest migration crisis since World War II. But not all Europeans believe building walls or passing repressive policies are the answer. A school for migrants in the French port city of Calais, is opening doors and building bonds across nationalities. VOA's Lisa Bryant reports.
Video

Video Kurdish Fighters on IS Frontline Ready for Offensive

Finger on the trigger, the Kurdish Peshmerga soldier stared across the dust at a village taken over by Islamic State extremists. The Kurdistan’s Khazir frontline, just 45 minutes from the Islamic State stronghold of Mosul. And at this point, the militants were less than two kilometers away. VOA's Sharon Behn reports.
Video

Video China Announces Troop Cuts at WWII Parade

Chinese President Xi Jinping Thursday announced plans to cut the world’s largest military force by 300,000 troops. The announcement was made during a massive military parade to commemorate victory over Japan in World War II. The event was shunned by most Western leaders and for some is raising fresh concerns about China’s military ambitions. VOA’s Bill Ide has more from Beijing.
Video

Video Russia-Japan Relations Cool as Putin Visits China for WWII Anniversary

Russian President Vladimir Putin is in Beijing for commemorations of the 70th anniversary of China's WWII victory over Japan. Putin is expected to visit Japan later this year, but tensions between Tokyo and Moscow over islands disputed since the war, and sanctions over Ukraine, could pour cold water on the plan. VOA's Daniel Schearf reports.
Video

Video Yemen ‘on Brink of Disaster’ as Medical Shortages Soar

Aid agencies warn Yemen is on the brink of humanitarian disaster – with up to half a million children facing severe malnutrition, and hospitals running out of basic medicines. There are fears Yemen's civil war could escalate as the coalition led by Saudi Arabia tries to drive back Houthi rebels, who seized control of much of the country earlier this year. Henry Ridgwell reports.
Video

Video Apps Helping Kenyan Businesses Stay Ahead of Counterfeiters

Counterfeit goods in Kenya cost the government as much as $1 billion each year in lost tax revenues. The fake goods also hurt entrepreneurs who find it hard to carve out a niche in the market and retain customers. But as Lenny Ruvaga reports from Nairobi, information technology is being used to try to beat the problem.
Video

Video Nobel Prize Winner Malala Talks to VOA

Nobel Peace Prize winner Malala Yousafzai met with VOA's Deewa service in Washington Sunday to talk about women’s rights and unveil a trailer for her new documentary. VOA's Katherine Gypson has more.
Video

Video War, Drought Threaten Iraq's Marshlands

Iraq's southern wetlands are in crisis. These areas are the spawning ground for Gulf fisheries, a resting place for migrating wildfowl, and source of livelihood for fishermen and herders. Faith Lapidus has more.
Video

Video Colombians Flee Venezuela as Border Crisis Escalates

Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Rebuilding New Orleans' Music Scene

Ten years after Hurricane Katrina inundated New Orleans, threatening to wash away its vibrant musical heritage along with its neighborhoods, the beat goes on. As Bronwyn Benito and Faith Lapidus report, a Musicians' Village is preserving the city's unique sound.
Video

Video In Russia, Auto Industry in Tailspin

Industry insiders say country relies too heavily on imports as inflation cuts too many consumers out of the market. Daniel Schearf has more from Moscow.
Video

Video Scientist Calls Use of Fetal Tissue in Medical Research Essential

An anti-abortion group responsible for secret recordings of workers at a women's health care organization claims the workers shown are offering baby parts for sale, a charge the organization strongly denies. While the selling of fetal tissue is against the law in the United States, abortion and the use of donated fetal tissue for medical research are both legal. VOA’s Julie Taboh reports.

VOA Blogs

World Currencies

EUR
USD
0.8978
JPY
USD
119.24
GBP
USD
0.6567
CAD
USD
1.3230
INR
USD
66.495

Rates may not be current.