Why the City Is (Usually) Hotter than the Countryside
This piece from Smithsonian Mag explores the science behind why concrete jungles generally log hotter temperatures than rural locations in the same part of the world:
There are plenty of reasons why cities are hotter. All those people, their buildings and the machinery inside create heat. Air conditioning, for example, can raise temperatures by more than 1°C, Arizona State University researchers reported last month. Buildings and other structures can store more heat during the day than plants; at night, they emit some of that heat, contributing to warmer temperatures when it’s dark out. Cities might also have less reflectiveness, which would let them soak up more of the Sun’s heat.
But most researchers have considered the biggest contributor to the urban heat island effect to be the reduction in evaporation that occurs when plants are replaced by concrete. That evaporation, the thinking goes, absorbs energy and keeps the countryside cooler.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.