Plastic Rocks Found on Remote Brazilian Island

Artificial Intelligence That Can See With the Mind’s Eye

A team of researchers from the National University of Singapore, the Chinese University of Hong Kong and Stanford University are using artificial intelligence (AI) to decode human brain scans and determine what a person is picturing in their mind.

Brazilian researchers have discovered rocks formed from plastic debris in the permanently preserved area of Trindade Island, approximately 680 miles off the coast of Brazil. The island is a remote refuge for green turtles, which come by the thousands every year to lay their eggs. The only human inhabitants of the island are members of the Brazilian navy.

The team of researchers ran chemical tests on the rocks, called plasticglomerates, and determined that they were formed when fishing nets were dragged by the current and accumulated on the beach. It is believed that the nets melt when the temperature rises and they become embedded with the sedimentary granules and other debris on the beach.

Participants underwent brain scans using a functional magnetic resonance imaging (fMRI) machine while looking at more than 1,000 pictures, such as a red firetruck, a gray building and a giraffe eating leaves. This fMRI data was processed by an AI model for roughly 20 hours per patient, as it trained to associate certain brain patterns with the different images.

To test the learning capabilities of the AI model, the subjects were then shown new images while undergoing fMRI. Upon reviewing the brain waves, the AI system generated a shorthand description of each person’s brain state and sketched its best-guess facsimile of the image the participant saw. The AI-generated image matched the attributes (color, shape and other details) and semantic meaning of the original image approximately 84 percent of the time. Researchers believe that in a decade the technology could be used on anyone, anywhere.

Microplastics Released by Tea Bags

Most mesh tea bags are made of 20 to 30 percent plastic, which can release microplastics and nanoplastics, causing harmful effects for both human health and the environment. In a study published in the journal Environmental Science & Technology, researchers found that one standard tea bag made with plastic released 11.6 billion microplastics and 3.1 billion nanoplastics into a cup of tea. The particles in the tea matched the nylon and polyethylene terephthalate in the original tea bag.

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Safer alternatives include steeping loose teas with a stainless steel or silicone tea strainer, or purchasing tea from brands that offer plastic-free teabags. Organic teas may still have plastic in the tea bag, as the packaging is not overseen by organic-certifying organizations.