The first total solar eclipse of 2024 is in April and it will be the only solar eclipse this year that will have a path of totality stretching across the U.S. It’s been nicknamed “The Great North ...

Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Is your green my green? Probably not. What appears as pure green to me is likely to look a bit yellowish or bluish to you. This is because visual systems vary from person to person. Moreover, an ...