 which up until now they thought needed specific Earth-like conditions to form, and there seems to be a whole field of them. Curiosity's project scientist Ashwin Vasavada said, quote, it shouldn't be there, so now we have to explain it. Michael Toscano, WTOP News. You know what today is? National Ice Cream Day today, and that means there are some deals in the area to celebrate the occasion. More now with WTOP's Valerie Bonk.