Short answers, pulled from the story.
The oldest evidence of controlled fire use for cooking dates back approximately 790,000 years. This evidence was found in the form of heated fish teeth within a deep cave in Israel.
Richard Wrangham argues that the ability to cook food allowed early Homo habilis to develop larger cranial capacities and bipedalism. The energy saved from digesting raw food was redirected to fuel a growing brain, creating a biological feedback loop that shaped the species we are today.
The Columbian Exchange transferred ingredients such as potatoes, tomatoes, maize, beans, chili peppers, and chocolate from the New World to the Old World. Conversely, the Americas were introduced to cattle, sheep, pigs, wheat, oats, and rice.
The Maillard reaction occurs when sugars and proteins interact under heat to create savory, browned crusts. Caramelization happens when sugars are heated until all water of crystallization is driven off, resulting in a rich, nutty flavor and a deep brown color.
High-temperature cooking methods such as grilling, broiling, and smoking can generate carcinogens like heterocyclic amines and advanced glycation end-products. The formation of acrylamide, discovered in 2002, in toasted starchy foods has sparked international health concerns.
Pioneers of molecular gastronomy include chemist Hervé This, physicist Nicholas Kurti, and author Harold McGee. Chefs like Ferran Adria, Heston Blumenthal, and Pierre Gagnaire have embraced these methods to create molecular cuisine.