Photos: A sweaty robot may help humans understand impact of soaring heat

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For humans, such heat represents a potentially lethal threat, one that is still not fully understood. But for ANDI - a one-of-a-kind humanoid robot at Arizona State University - it's a lovely day out. "He's the world's first outdoor thermal mannequin that we can routinely take outside and ... measure how much heat he is receiving from the environment," mechanical engineering professor Konrad Rykaczewski told AFP. Image Credit: AFP

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ANDI is "a very realistic way to experimentally measure how a human person responds to extreme climate" without putting people themselves at risk, Rykaczewski says. At first glance, ANDI - which stands for Advanced Newton Dynamic Instrument - resembles a simple crash-test dummy. Image Credit: AFP

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But its epoxy/carbon fiber skin conceals a treasure trove of technology, such as a network of connected sensors that assess heat diffused through the body. ANDI also has an internal cooling system and pores allowing it to breathe and sweat. There are 35 independent thermal zones and, like humans, the robot - which cost more than half a million dollars to build - sweats more from its back. Image Credit: AFP

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Until now, only a dozen or so mannequins of this type existed, and none of them could venture outdoors. They were mainly used by sports equipment manufacturers to test their technical clothing in thermal chambers. Image Credit: AFP

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Researchers hope the robot will provide a better understanding of hyperthermia - that is, when a body overheats, a condition that is threatening a growing proportion of the world's population as a result of global warming. For obvious ethical reasons, "nobody measures core temperature increase while somebody's getting heatstroke," says Rykaczewski. But the effects of heat on the human body are still not fully comprehended. ANDI gives researchers a chance to understand. Image Credit: AFP

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Accompanied by MaRTy (Mean Radiant Temperature), a mobile weather station that measures the heat reflected by the buildings around it, the robot is taking its first steps outside in Phoenix - an ideal laboratory in which to prepare for tomorrow's climate. "How do we change what we wear? How do we change our behavioral patterns, and adjust them to temperatures that are of this order of magnitude?" says Rykaczewski. Image Credit: AFP

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Andi is also infinitely reprogrammable. The research team can make "digital twins of the mannequin to look at different segments of the population," explains Jennifer Vanos, a climatologist involved in the project. For example, the older you get, the less you sweat. Young people will need different protection from athletes or people in poor health. With ANDI, scientists can simulate the thermoregulatory mechanisms specific to each individual. Image Credit: AFP

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They can also test the robot in a variety of situations. For example, Phoenix is dry - what about humid heat? How does the human body cope in hot winds? Their research will be useful for designing heat-resistant clothing, rethinking urban planning and protecting the most vulnerable. In Phoenix, which opens dozens of cooling centers for the homeless every summer, their findings could guide the actions of social workers. Image Credit: AFP

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"How long should a person stay in a cooling center to cool off, so that their core temperature goes down to a level that's safe again? We can answer that question with Andi," says Vanos. Image Credit: AFP

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The team also dreams of developing low-cost sensors to be used on building sites to adjust working hours according to the heat actually felt on site and the health of the workers - rather than based on general weather conditions. That could be a "step towards better safety than just these blank recommendations per city, per state, per country," Rykaczewski says. Image Credit: AFP

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Such specific, tailored solutions could have global impacts, redrawing entire cities. "If the future of Paris looks like Phoenix now, we can learn a lot about how do we design buildings," says Rykaczewski. Image Credit: AFP

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