come on, Kathmandu vasis . do it to cool down. to cool down the earth.
forget the records.
They are not cool,or even cooling.Trees are. And the koala knows it

Thousands hug trees in world record bid

Over 2,000 people gathered in Nepal’s capital on Thursday in a bid to set a world record for the largest tree hug.

Parliament members, students, office workers and Buddhist monks were among those who took part in the event. They said they were celebrating World Environment Day by spreading awareness about the importance of trees.

The previous Guinness record for most people hugging trees simultaneously was 936 people in Portland, Oregon, last July.

http://www.thehindu.com/sci-tech/energy-and-environment/thousands-hug-trees-in-world-record-bid/article6086393.ece?homepage=true

Science Graphic of the Week: Adorable Chart Shows Why Koalas Hug Trees

BY
NICK STOCKTON
- These koalas are so hot. Natalie Briscoe
  
  When things get hot, many mammals use their body’s moisture to cool off. Humans sweat, dogs pant, and koalas lick their adorable arms and legs and cool off as the moisture evaporates. This is a great strategy, at least until it really starts to swelter on the drought-prone west coast of Australia. So, on the hottest days, koalas supplement their limb-licking with another equally-cute strategy: hugging trees.
  
  In a new paper in the Royal Society’s Biology Letters, a team of Australian and American researchers report that as temperatures rise, koalas tend to put more of their bodies in contact with the trees they inhabit. The science behind this involves something called conductive heat transfer, wherein a warm object (say, a koala) transfers heat to a cooler one (like a tree) and both objects approach the same temperature. The trees stay cool by sucking up water hidden deep in the soil from the baking sun.
  
  At 99°F, the koala stays cool by draping itself over a tree limb. Natalie Briscoe
  
  To solve the mystery of how koalas stay hydrated and cool on the hottest days, the researchers radio-collared 37 of the little fur balls and took notes on the animals’ posture, activity, and location in the tree. In addition, they snapped infrared pictures and used a telescoping weather station to get a reading of the air temperature immediately surrounding each koala.
  
  They found that as it got hotter outside, the koalas tended to sit lower in the trees, in a posture now formally described in the scientific literature as “tree-hugging.” In milder weather, the koalas sat higher, reclined back, or rolled themselves into balls.
  
  “Koalas have a very limited diet and so will, when given the opportunity, choose food trees,” says Warren Porter, a co-author and professor of zoology at the University of Wisconsin in Madison. However, the koalas preferred acacia trees over eucalyptus in warmer weather. That makes sense: the acacias, which the koalas do not eat, tended to be 6.5 – 8.5°F cooler than the eucalyptus trees the koalas dine on. In addition to the radio-collared marsupials, the researchers walked a transect that was nearly a half-mile long and took notes on the posture and position of 130 more koalas.
  
  The chart above shows examples of postures the researchers saw as they surveyed koalas in a range of temperatures. When the temperatures were lower, you can see the koalas are more likely to have their limbs tucked close to their bodies, to conserve heat. As temperatures rise, the marsupials tend to sprawl more and get lower on the tree (possibly because the limbs are thicker and can absorb more heat, but also because they’re typically more shaded).
  
  While this research solves some of the mystery of how koalas survive the brutal Australian summer, it also raises an equally pressing question: how someone gets paid to watch koalas all day.
- http://www.wired.com/2014/06/science-graphic-of-the-week-adorable-chart-shows-why-koalas-hug-trees/