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Guest posted a topic in TopicsAs a pet owner, here’s a good rule of thumb to follow: If it’s too hot outside for you, then it’s way too hot for your dog. Jason Nicholas, veterinarian and chief medical officer at Preventive Vet, says once weather hits 80 degrees Fahrenheit (which seems like Antarctica compared to last week’s 100-plus degree heat wave), pet owners should start taking precautions. Nicholas says he’s seen far too many cases of dogs with heatstroke, a deadly, but completely preventable, condition. Why can't dogs handle the same weather that humans can? As much as the guy with long blonde hair may look like his similarly-styled Afghan hound, dogs and humans are separate species with much different tolerances to temperature. We have the luxury of being swathed in a massive, perspiring organ that cools us from head to toe. But dogs' thick fur coats make it harder for them to get rid of heat. Instead of sweating, the main way a dog lowers its body temperature is through panting. These heavy, quick breaths expel heat and cause moisture to evaporate, which cools the blood in the mouth and tongue. However, certain conditions make this technique ineffective. In high humidity, evaporation happens more slowly—which means that even in a nice, shady refuge, no amount of panting will bring down a dog’s internal temperature. Read more:
Guest posted a topic in Health & Medicine's TopicsThe hotter our body temperature, the more our bodies speed up a key defense system that fights against tumors, wounds or infections Date: May 21, 2018 Source: University of Warwick Summary: The hotter our body temperature, the more our bodies speed up a key defense system that fights against tumors, wounds or infections, new research has found. The hotter our body temperature, the more our bodies speed up a key defence system that fights against tumours, wounds or infections, new research by a multidisciplinary team of mathematicians and biologists from the Universities of Warwick and Manchester has found. The researchers have demonstrated that small rises in temperature (such as during a fever) speed up the speed of a cellular 'clock' that controls the response to infections -- and this new understanding could lead to more effective and fast-working drugs which target a key protein involved in this process. Biologists found that inflammatory signals activate 'Nuclear Factor kappa B' (NF-κB) proteins to start a 'clock' ticking, in which NF-κB proteins move backwards and forwards into and out of the cell nucleus, where they switch genes on and off.
Guest posted a topic in TopicsIce in the Arctic Ocean’s Chukchi Sea region. “What’s going on in the Arctic is really very impressive; this year was ridiculously off the chart,” said Gavin A. Schmidt, the head of NASA’s Goddard Institute for Space Studies. CreditEsther Horvath Marking another milestone for a changing planet, scientists reported on Wednesday that the Earth reached its highest temperature on record in 2016, trouncing a record set only a year earlier, which beat one set in 2014. It is the first time in the modern era of global warming data that temperatures have blown past the previous record three years in a row. The findings come two days before the inauguration of an American president who has called global warming a Chinese plot and vowed to roll back his predecessor’s efforts to cut emissions of heat-trapping gases. In reality, the Earth is heating up, a point long beyond serious scientific dispute, but one becoming more evident as the records keep falling. Temperatures are heading toward levels that many experts believe will pose a profound threat to both the natural world and to human civilization. In 2015 and 2016, the planetary warming was intensified by the weather pattern known as El Niño, in which the Pacific Ocean released a huge burst of energy and water vapor into the atmosphere. But the bigger factor in setting the records was the long-term trend of rising temperatures, which scientists say is being driven by increasing levels of carbon dioxide and other greenhouse gases. Continue reading here