These lizards use bubbles to breathe underwater (3 minute read)
New research shows that a dozen species of Caribbean and Latin American anoles can exhale air underwater to create oxygen-filled bubbles that cling to their heads. Scientists theorize that the bubbles could be helping the animals remove carbon dioxide and pull in more oxygen from water via diffusion. An analysis of the anoles that displayed this behavior and their lineages determined that the behavior evolved five separate times in the lizards. Several types of insects display similar behavior, but insects have significantly lower metabolic rates, need less oxygen, and are smaller, so the bubbles have a larger surface area to body mass ratio.
Mind-Controlled Flamethrower (2 minute read)
Nathaniel F built a mind-controlled flamethrower by combining brain-computer interface technology with machine learning. The system fires the flamethrower when it detects the correct thought patterns. It was created using a Mindflex, a Raspberry Pi 4, an Arduino, and a flamethrower. A 7-minute video showing how the flamethrower was made is available in the article.