An agreement signed Friday formalizes seven tribes as co-managers of the Clear Lake watershed. Mercury contamination, toxic algal blooms and invasive fishes have threatened a rare and revered local fish.

New findings raise concerns about potential misdiagnosis, inappropriate treatment, and errors in psychiatric research.

A century-old mystery in Venus’s clouds just became more intriguing, as scientists calculated how strongly the unidentified material behind its dark ultraviolet patterns must absorb light. The results sharply narrow the possibilities and could help future spacecraft determine whether the mysterious substance is organic, inorganic, or something unexpected.

Ancient auroras are unlocking secrets of solar activity, offering scientists a glimpse into the Sun's behavior long before our time. By employing a new statistical method to analyze historical sky observations, researchers have pieced together eight distinct cycles of solar activity from 1560 to 1640. This intriguing study correlates well with various independent solar records, enhancing our unde…

The mission, dubbed USSF-153 mission, will launch an undisclosed number of satellites for the U.S. Space Force. Liftoff from pad 4E at Vandenberg Space Force Base is scheduled during a three-hour window that opens at 8:37 a.m. PDT (1137 a.m. EDT / 1537 UTC).