Curiosity or fear? How Yeti, Unicorn and Bigfoot caught world's imagination

The Indian Army had tweeted on the 29th of April that it spotted footprints that supposedly belonged to the mythical creature that lives in the Himalayas, according to legend.

Business Standard : Propelled by fascination for the unknown, a variety of creatures, from the abominable Himalayan snowman to its North American cousin Bigfoot, often cross over from myth into reality even though there is little evidence to back their existence.

As it was last fortnight when the Indian Army rekindled the Yeti mystery with its tweet showing pictures of large footprints in the snow in the higher Himalayas and claimed they belonged to the abominable snowman.

Experts believe the possible reasons behind the enduring obsession with the beings that inhabit the nebulous worlds of legend and folklore and ever so frequently enter the realm of everyday life are many -- from human curiosity and the need to connect with the past to identifying threats to the survival of humankind.

Loch Ness, Unicorn and Almas... the list of such creatures is long, cutting across regions and cultures.

The correlation between imagination and imagined reality is once again under the scanner with the Indian Army releasing pictures and videos of footprints captured close to the Makalu Base Camp in Nepal in March.

In Nepali folklore, Yeti is a mythical bipedal ape-like creature taller than an average human and is said to inhabit the Himalayas, Siberia, Central and East Asia.

Nepali officials later clarified the footprints belong to the Himalayan Black Bear active in the area.

"As we get farther from the real wild, we seek talismans to connect us to the wild. A half-man, half-ape creature is such a symbol. It gives humanity an identity as an animal in a world where we are otherwise making everything of human manufacture," said American conservationist Daniel C Taylor who has spent 35 years in Nepal's Barun Valley dispelling the Yeti myth.

"I researched from 1956, when at age 11 I saw my first photograph of the footprint so I knew there was a real animal, to 1983 when I explained scientifically that it was the Himalayan Black Bear," Taylor, who is also the author of the 2017 book, 'Yeti: The Ecology of a Mystery', told PTI.

Given the lack of evidence of its existence, the scientific community has generally regarded the Yeti as a legend.

Melting Himalayan glaciers: What's at stake and how it will impact us

Global warming is reducing our resources, and making life more perilous along the way. The rivers of the Himalayas are just one more example.

A new report has warned that even if global warming is held at 1.5 degrees Celsius, we will still lose a third of the glaciers in the Hindu Kush-Himalaya (HKH) region. What does that mean for rivers that flow down these mountains, and the people who depend on them?

The HKH region is home to the tallest mountains on Earth, and also to the source of rivers that sustain close to 2 billion people. These rivers supply agriculture with water and with sediments that fertilise soils in valleys and the floodplain.

Some of these rivers are hugely culturally significant. The Ganges (or Ganga), for instance, which flows for more than 2,525km from the western Himalayas into the Bay of Bengal, is personified in Hinduism as the goddess Ganga.

(Business Standard)

When it rains, it pours… literally

Before we get to the effect of melting glaciers on Himalayan rivers, we need to understand where they get their water.

For much of Himalayas, rain falls mostly during the monsoon active between June and September. The monsoon brings heavy rain and often causes devastating floods, such as in northern India in 2013, which forced the evacuation of more than 110,000 people.

But the summer monsoon is not the only culprit for devastating floods. Landslides can dam the river, and when this dam bursts it can cause dramatic, unpredictable flooding. Some of those events have been linked to folk stories of floods in many cultures around the world. In the Himalayas, a study tracking the 1,000-year history of large floods showed that heavy rainfall and landslide-dam burst are the main causes.

When they melt, glaciers can also create natural dams, which can then burst and send floods down the valley. In this way, the newly forecast melting poses an acute threat.

The potential problem is worsened still further by the Intergovernmental Panel on Climate Change’s prediction that the frequency of extreme rainfall events will also increase.

Come hell or high water

What will happen to Himalayan rivers when the taps are turned to high in this way? To answer this, we need to look into the past.

For tens of thousands of years, rivers have polished rocks and laid down sediments in the lower valleys of the mountain range. These sediments and rocks tell us the story of how the river behaves when the tap opens or closes.