Win a DVD/Blu-ray combo pack of the animated film “Rango,” starring Johnny Depp. This title hits stores July 15, and we want to put a copy in the hands of one lucky reader by that date. Just answer one simple question by 5 p.m. Eastern, Monday, July 11. We’ll pick one random winner from among the entries.
The question: Which is the United States’ largest species of cactus? Find the answer in our Nature column from May 1981. Click here to enter our Wayback Machine and browse old issues. Use the form below to submit your answer.
As you know, we like to send BL 100th anniversary scarves to the first few runners-up. So, get searching! And good luck!
UPDATE: Congratulations to our winner, reader Wiley! Didn’t win but still want a copy of “Rango”? Just click here to purchase.