text: In May 2022, scientists at University of Cambridge announced they created an algae energy harvester, that uses natural sunlight to power a small microprocessor, initially powering the processor for six months, and then kept going for a full year. The device, which is about the size of AA battery, is a small container with water and blue green algae. The device does not generate a huge amount of power, but it can be used for Internet of Things devices, eliminating the need for traditional batteries such as lithium ion batteries. The goal is to have more a environmentally friendly power source that can be used in remote areas.