Extinction is a global crisis. While poaching often makes headlines thanks to gruesome images, habitat loss and environmental pollution are also killers. Climate change, in addition, might cause as many as 1 in 6 animal and plant species to become extinct.
These 9 catastrophic events caused untold destruction and loss of life - they were also completely man made.
Can you match these distinctive, prominent, and instantly recognizable natural landmarks to their national parks?
From job creation to food security, can you separate the fact from the fiction when it comes to clean energy?