The number of wild tigers has increased for the first time in a century. According to wildlife groups, the global population has risen to an estimated 3,890 from an all-time low of 3,200 in 2010.
Civil war, deforestation, disease and poaching have driven the mighty mountain gorilla to the brink of extinction. Conservation efforts have helped boost population numbers, but humans are still their greatest threat.
For a century, Russia's nature reserves — with the world's strictest wildlife protections — have been largely off-limits to humans. One of them, Kronotsky, boasts geysers, active volcanoes and 800 brown bears.
Poison, dogs and helicopters - how scientists pulled out all the stops to protect South Georgia's wildlife from a plague of rats.
The helicopter crash in Mali has been attributed to insufficient testing and flight training by a military pilots' lobby group. But the Bundeswehr says it doesn't deploy inexperienced crews to the UN mission.
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