The extreme speed at which light moves, and the fact that photons do not tend to interact with transparent matter, is of enormous benefit to mankind. It allows us to see deep into the Universe and to ...

Light therapy may help improve symptoms of depression by aligning your body’s natural clock, balancing serotonin levels, and stabilizing sleep patterns. Typical light therapy involves sitting near a ...

Thank you to everyone who hosted watch parties and celebrated National Chemistry Week 2025 with us! If you were unable to attend live, ACS invites you to use the recording of this year's event ...