The Laetoli footprint trail puzzled the scientific world when it was discovered. In the hot and shrubby Olduvai Gorge in northern Tanzania, water and geologic activity wore away sediment...
Polaskia is named after Charles Polaski, an amateur American. In 1905, Robert Roland-Gosselin described two large cacti that grow in the dry, cactus-rich area...
Two types of fritillaries are very commonly grown in gardens. They’re like Mutt and Jeff. Fritillaria meleagris (checkered lily) has flowers shaped like little...