Black Mambas Are Agile Tree Climbers Despite Living Mostly on the Ground

Kenyan environmentalist Wangari Maathai received the Nobel Peace Prize in 2004 for her contribution to sustainable development, democracy, and peace. She founded the Green Belt Movement in 1977, which mobilized poor rural women to plant trees, restore degraded land, and improve local livelihoods. Under her leadership, the movement planted over 51 million trees across Kenya. She was also the first woman in East and Central Africa to earn a doctoral degree.

While some marmot species are solitary, others like the yellow-bellied marmot and Olympic marmot are highly social. They live in colonies of up to 20 individuals structured around a dominant male, several females, and their offspring. Social bonds are reinforced through greeting behavior — marmots famously touch noses and nuzzle each other upon meeting, strengthening group cohesion vital for surviving long winters together.

Marmot burrows are engineering marvels — they can extend up to 5 meters deep and 15 meters long, with separate chambers for sleeping, hibernation, and waste. Multiple entrances and emergency escape routes are always built. The burrow systems are not abandoned after one season; instead, they are expanded and reused by generations of marmots and also provide shelter to other alpine species like pikas and foxes.

Marmots are famous for their piercing alarm whistle, which has earned them the nickname 'whistle pigs' in North America. When a predator — such as an eagle, fox, or bear — is spotted, a sentinel marmot lets out a sharp, loud cry that sends the entire colony diving into burrows within seconds. Different call patterns distinguish aerial threats from ground predators, showing a basic form of communication.