Buildings could be made of cob / clay / mud
Farmworkers / construction / all workers could be prevented from heatstroke / kidney damage / death
The U.S. / world could have more public swimming pools / lessons
Tents could be cooler / warmer
Tomato sauce could be jarred in the summer
Phase-change material could make clothes hot or cold
Reflective pavement could make temperatures warmer
Pickle juice (or savory drinks) could be become popsicles
Pinching finger knuckles' skin could be a test for dehydration
Salads could contain grilled fruit
FedEx / UPS trucks could have air conditioning or cooling options
Working / living temperatures could be cooler or warmer with roofs / fans in developing countries
Communities could have alfresco chats
Restaurants / bars could float and cruise around
Smart thermostats could be given away to ease blackouts during heatwaves and save energy
Bodies could be protected from chafing
Beer / other bottled drinks could stay cold
Jackets, coats, and clothes could be lit up, cooled, or heated
Parking lots / pavement could be green and permeable
More trees could be planted
Coolers could provide air conditioning
Roofs could be green and have vegetation
