Category: News

Is vinca a perennial?

Score: 4.4/5 (39 votes) Annual vinca (Catharanthus roseus) is a tropical perennial that is grown as an annual in most regions. It has flowers and foliage...

Are there melanistic humans?

Score: 4.9/5 (13 votes) In humans. Melanism, meaning a mutation that results in completely dark skin, does not exist in humans. Melanin is the primary de...

Is goshenite a rare stone?

Score: 4.4/5 (68 votes) The variety goshenite is ideally colorless, and is named for Goshen, Massachusetts. The present stone, an example of this colorle...