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With rising fuel prices, more attention is turning to biofuels. But (the) use of food crops for biofuel raises the concern of food shortages. But one non-food biofuel source is gaining attention. Just inland from the southern Mozambique beach resort
国家地理2008年
By Tendai Maphosa London 31 March 2008 Britain is stepping up the use of biofuels with new targets in the coming weeks - as the first step toward meeting an EU directive that five percent of all transport fuels come from renewable energy sources by t
VOA标准英语2008年（三月）
Bioengineered Spinal Disc Could Relieve Back Pain Researchers at Cornell University in New York have developed an artificial spinal disc that may help patients with chronic back pain and other disc problems. The spine is a column of bones alternating
VOA标准英语2011年(八月)
By Lisa Schlein Geneva 19 November 2006 The threat of bio-terrorism will top the agenda of a sixth review conference of the 1972 Biological Weapons Convention. The two-week conference, which begins Monday in Geneva will review the ban on biological
2006年VOA标准英语（十一月)
By Peter Heinlein Addis Ababa 15 May 2008 Growing enough food to alleviate shortages in African countries is not easy, but an agro-ecologist in Ethiopia thinks he has the answer: bio-farming. The technique uses animal waste products to produce energy
VOA标准英语2008年（五月）
In the Rocky Mountains of Central Colorado, the forces of nature create a landscape of alpine lakes, high-altitude ponds teeming with life and mountain meadows bursting with wild flowers. It is amidst these beautiful wildflower fields that one scient
自然百科2008年
By Paul Sisco Washington 28 February 2008 Air travel is growing rapidly around the world and the fuel jets burn is a major contributor of greenhouse gases. Virgin Atlantic Airlines President Richard Branson demonstrated this week that using biofuel t
VOA常速英语2008年（二月）
By Lisa Schlein Geneva 20 August 2007 Experts attending an international conference are calling for quick action to reduce the threat posed by biological weapons. Participants attending the week-long meeting at the United Nations in Geneva say the so
2007年VOA标准英语（八月）
By Mil Arcega Washington 28 April 2008 The World Food Program warns that rising food prices could turn into a global crisis unless the world acts quickly. The U.N. food agency has issued an urgent appeal to the international community for immediate a
VOA常速英语2008年（四月）
The U.N. Special Investigator on the Right To Food says soaring food prices have declined somewhat, but the crisis remains and the problems are exacerbated by the production of bio-fuels. The expert submitted a report to the U.N. Human Rights Counci
VOA标准英语2008年（九月）