Snowflakes form in a myriad of different shapes from hexagonal plates to exquisite symmetrically-branching crystals, depending on the temperature and humidity.
An atmospheric river is poised to hit California, bringing rain, wind and heavy snowfall. The National Weather Service warns people to make preparations.
Happy International Zebra Day! It's a great opportunity to raise awareness about zebras - best known for their beautiful stripes - and their endangered status.
Scientists using satellite images found brown poop stains that led to a surprise discovery of four emperor penguin colonies. But all is not well in Antarctica.