 We love a good barbecue here at Science Friday, and this week marks the 10th anniversary of one of our all-time favorite summer science segments, with some grilling tips for your 4th of July. Here's Ira Flato. Cooking over an open flame was probably the first form of cooking, but practitioners of the low and slow method know that it's a combination of instinct and science. Gas versus charcoal. Rubs versus marinades.