No one knows what triggers the sudden onset of hypoxia, a quickly-spreading drop in ocean oxygen. Like a wildfire, hypoxia kills everything that can’t walk or swim out of harm’s way. For the first time ever, a team at the Smithsonian Tropical Research Institute (STRI) in Panama documented a hypoxic event in progress on a Caribbean coral reef. A second team applied a new approach to look for signs of hypoxic events as people colonized the coast during the last 2000 years. Their complementary results are published in the journals Nature Communications and Ecography
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, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, 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.