In 1984, the desert in Al Jowf, Saudi Arabia, was empty. Then engineers discovered hidden aquifers—as deep as a kilometer underground—and started turning the sand into tomato and alfalfa farms. A NASA time-lapse video, stitched together from high-res satellite images, shows the transformation.
Google used its Earth Engine platform to build similar time-lapse images of the entire globe, showing how dramatically most of the world has changed in the last 32 years. On the Timelapse site, you can type in an address and watch megacities and mines sprawl as glaciers and lakes shrink.
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.