Shot preventing HIV infections will be available at low cost in 120 poor countries, but nearly all of Latin America was excluded from the deal with drugmaker Gilead
Countries negotiating global treaty to curb plastic pollution failed to reach agreement, with more than 100 nations wanting to cap production while handful of oil-producers were prepared only to target plastic waste
Studying fossils of undigested food helps scientists discern feeding patterns and ecosystem's food webs
Forest-dwelling wildcats that are threatened by climate change
Officials warn of dangerous conditions for Thanksgiving travelers trying to return home in parts of New York and Pennsylvania
The world produces more than 400 million tons of new plastic every year
Potatoes are crucial to global food security because of their high yield relative to other staple crops
7 out of 10 new adolescent infections were among girls
No illnesses were immediately reported
Producers turn the insects into protein-rich feed for free-range chickens and fertilizer for gardens
Small but growing number of H5N1 avian influenza infections have been detected in humans around the world in recent years
A clinic initiative in Kenya aims to provide health care to vulnerable mobile populations such as truck drivers and commercial sex workers. The goal is to combat the spread of disease across borders in Africa. Juma Majanga reports from the transit town of Mlolongo in Kenya. Camera: Amos Wangwa
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