Giant crystal tree may be next piece of art approved for Denver International Airport
Denver City Council will have its first reading to approve a $3.5 million contract with an artist for a giant piece of ...
Smithsonian Magazine21d
Giant, Mysterious Spires Ruled the Earth Long Before Trees Did. What Exactly Are These Odd-Looking Fossils?
For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide ... roughly 400 million years ago. Painting by Mary Parrish, National ...