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An equilibrium glide, achieving a constant airspeed and glide angle, is harder to obtain as animal size increases. Larger animals need to glide from much higher heights and longer distances to make it energetically beneficial. [9] Gliding is also very suitable for predator avoidance, allowing for controlled targeted landings to safer areas.
In cold weather, sugar gliders will huddle together to avoid heat loss, and will enter torpor to conserve energy. [31] Huddling as an energy conserving mechanism is not as efficient as torpor. [ 31 ] Before entering torpor, a sugar glider will reduce activity and body temperature normally in order to lower energy expenditure and avoid torpor.
Feathertail gliders do not hibernate as such, but are capable of entering torpor during cold weather at any time of the year. Torpor can last for several days, during which time the animal's body temperature can drop to as low as 2 °C (36 °F) and oxygen consumption to just 1% of normal. [ 4 ]
[333] [334] [335] Inuit clothing has also been extensively studied for its effectiveness as cold-weather clothing, especially as compared to synthetic materials. [ 336 ] [ 337 ] Microscopic analysis of historical garments can reveal details about the animal that produced the pelt, including genetic information from DNA and dietary information ...
The two most important properties to look for in cold-weather gear are thermal insulation and wind resistance, says Khubab Shaker, chairman of the department of materials at the National Textile ...
The annual rite on Groundhog Day isn’t great at predicting the length of winter. But there are some science-based links between plants, animals and incoming weather.
Pennycuick [1] divides animal flight into three types: parachuting, gliding and powered. He observes however that these have no sharp boundaries. For example, at one point he sees parachutes as unpowered and as a primitive form of soaring, while soaring itself he sees as being powered by air movement (wind).
For the coffee lover who really hates when their cuppa goes cold, the Ember temperature-control mug is a no brainer. I'm a long-time owner of the original Ember mug (this is the model No. 2) and I ...