Scientists often label cells with proteins that glow to measure changes in gene expression, but this technique is difficult to apply to structures deep within the brain as light scatters too much before it can be detected. MIT engineers have engineered blood vessels to express a protein that causes them to dilate in the presence of light. This dilation can be observed with magnetic resonance imaging, allowing researchers to pinpoint the source of light. The new technique allows researchers to explore the inner workings of the brain in more detail than previously possible.

MIT researchers have developed an amber-like polymer that can be used for long-term storage of DNA. It can store DNA at room temperature while protecting the molecules from damage caused by heat or water. The DNA can be easily removed from the polymer without damage. The process of embedding DNA into the polymer takes a few hours, but the researchers believe that the process can be sped up with further optimization.

PlatoNeRF is an AI technique developed by MIT and Meta researchers that uses shadows and single-photon lidar to create 3D models of scenes, including obstructed areas. This method could enhance the safety of autonomous vehicles and improve AR/VR experiences. PlatoNeRF outperforms traditional methods and has promising practical applications with lower-resolution sensors.

MIT and other institutions have launched the AI Risk Repository, a comprehensive database of over 700 documented AI risks, to help organizations and researchers assess and mitigate evolving AI risks using a two-dimensional classification system and regularly updated information.