A massive seaweed bloom of sargassum in the Atlantic Ocean is headed toward the Caribbean and east coast of Florida. Some locals are already seeing it.
A hybrid eclipse is a solar eclipse that appears as total for some and annular for others, with those farther from the centerline seeing a partial eclipse.
Medieval monks kept detailed nature journals, which included stories of strangely dark lunar eclipses. Today, those old journals are helping researchers pinpoint dates of past volcanic eruptions.
Researchers use machine learning to track bird migration. Through BirdCast, scientists can inform citizens of when to turn their lights out to protect birds.