All articles tagged with #heat tolerance
A newly discovered amoeba, Incendiamoeba cascadensis, has set a record for heat tolerance among eukaryotic organisms, thriving and dividing at temperatures up to 63°C, challenging previous assumptions about the thermal limits of complex life and suggesting that eukaryotes can survive in much harsher environments than previously thought.
A study published in the journal Global Change Biology reveals surprising findings about the resilience of mountainous star coral, Orbicella faveolata, which could help efforts to save coral reefs from the impacts of climate change. Contrary to expectations, the study found that offspring from a less heat-tolerant population performed better when exposed to high temperatures compared to their counterparts from a heat-tolerant population. This challenges the belief that if coral parents can handle heat, so should their offspring. The research suggests that factors such as the history of bleaching and other environmental pressures may influence the ability of coral offspring to handle heat. The study highlights the need for a more comprehensive approach to coral rescue, considering genetic diversity and external stressors affecting overall well-being.
A stay-at-home parent is struggling to work outside due to a lack of heat tolerance and reliance on air conditioning. The columnist advises her to consult a doctor to rule out any underlying health issues and gradually acclimate to working outdoors. The writer is reminded not to denigrate her own work ethic and to take it slow in adjusting to warming temperatures.
Our bodies have the ability to adapt and build up tolerance to heat through a process called heat acclimatization. By gradually exposing ourselves to short bouts of heat and humidity, our bodies can trigger physiological adaptations that improve our ability to withstand hotter temperatures and reduce the risk of heat-related illness. Some of these adaptations include increased blood volume, improved sweating efficiency, and better electrolyte retention. It is important to start slowly and listen to our bodies, as factors such as age, underlying medical conditions, and medications can affect our ability to adapt. Staying well-hydrated, engaging in physical activity during heat exposures, and allowing for adequate rest and recovery are also key in building heat tolerance.
A study conducted by researchers at the University of Roehampton has shed light on the upper limit of the thermoneutral zone of the human body, which is the range of temperatures where the body doesn't have to exert extra energy to maintain its core temperature. The study found that the upper limit likely lies between 40℃ (104F) and 50℃ (122F), beyond which the body's ability to dissipate heat and function optimally decreases. The findings have implications for understanding the impact of heatwaves and warm temperatures on human health and can inform policies on working conditions, sports, medication, and international travel.