Migratory patterns of 10,000 species are being destroyed by barriers, habitat degradation, pollution and climate change.
13 Nov 2011 17:32 GMT | Environment, Botswana, China, Germany, Greece
A teacher struggles to help young people caught in a vicious cycle of drugs and violence in Mexico's Guerrero state.
Latin America, Mexico, Education
Al Jazeera investigates the shocking truth behind a deadly Israeli attack on a US naval vessel.
Israel, Politics, United States
TechKnow looks at the controversy surrounding psychedelic science and asks if a party drug can help cure trauma.
Health, PTSD, Drugs
Hungary's foreign minister defends the country's refugee policy and challenges Europe's "political correctness".
Refugees, Politics, Europe