- News Home
24 April 2014 11:45 am ,
Vol. 344 ,
Major climate data sets have underestimated the rate of global warming in the last 15 years owing largely to poor data...
The tsetse fly is best known as the vector for the trypanosome parasites that cause sleeping sickness and a disease in...
The National Institutes of Health is revising its "two strikes" rule, which allowed researchers only one chance to...
By stabilizing the components of retromers, molecular complexes that act like recycling bins in cells, a recently...
Fossil fuels power modern society by generating heat, but much of that heat is wasted. Semiconductor devices called...
Researchers are gaining insights into what made Supertyphoon Haiyan so powerful and devastating through post-storm...
Millions around the world got a first-hand look at what it was like to be in Tacloban while it was pummeled by...
- 24 April 2014 11:45 am , Vol. 344 , #6182
- About Us
ScienceShot: Tree Gliders Are Energy Wasters
28 July 2011 12:15 am
Gliding from tree to tree may not be as relaxing as it looks. A number of small mammals, including the colugo—a flying lemur (Galeopterus variegates) native to southeast Asia and the Philippines—get around by climbing up trees and then gliding across the canopies an average distance of 30 meters. But these animals could save more energy if they just ran on all fours, according to a study published today in the Journal of Experimental Biology. By attaching small data-logging packs with motion sensors to the backs of four colugos, researchers found that it takes one-and-a-half times more energy for the animals to climb up a tree and glide from point A to B than it does for them to move the same distance through the trees. So why do they do it? Perhaps, the researchers suggest, gliding in mammals evolved for survival reasons: since they feed on canopy leaves, gliding may have protected them if they fell from the branches. It also may have helped them escape from predators, giving a new meaning to the phrase "fight or flight."
See more ScienceShots.