Free Lessons in Chemistry by Bonnie Garmus

dog did throw himself upon it, the most he might get was a noisy explosion followed by a huge burst of red paint.
    It was the noise; it scared Six-Thirty to death. So each day, when his handler commanded him to “Find it,” he would immediately take off to the east, even though his nose had already informed him that the bomb was fifty yards to the west, poking his nose at various rocks while he waited for one of the other, braver dogs to finally find the damn thing and receive his reward biscuit. Unless the dog was too late or too rough and the bomb exploded; then the dog only got a bath.
----
    —
    “You can’t have a dog here, Dr. Evans,” Miss Frask explained to Calvin. “We’ve gotten complaints.”
    “No one’s complained to me,” Calvin said, shrugging, even though he knew no one would dare.
    Frask backed off immediately.
----
    —
    Within a few weeks, Six-Thirty made a full inventory of the Hastings campus, memorizing every floor, room, and exit, like a firefighter preparing for catastrophe. When it came to Elizabeth Zott, he was on high alert. She’d suffered in her past—he could sense it—and he was determined she should never suffer again.
    It was the same for Elizabeth. She sensed that Six-Thirty had also suffered beyond the usual dog-left-by-the-roadside neglect, and she, too, felt the need to protect him. In fact, it was she who insisted that he sleep next to their bed even though Calvin had suggested he might be better off in the kitchen. But Elizabeth won out and he stayed, completely content, except for those times when Calvin and Elizabeth locked their limbs in a messy tangle, their clumsy movements punctuated with panting noises. Animals did this too, but with far more efficiency. Humans, Six-Thirty noticed, had a tendency to overcomplicate.
----
    —
    If these encounters took place in the early morning, Elizabeth would rise soon after to go make breakfast. Although she’d originally agreed to cook dinner five nights a week in exchange for rent, she also added breakfast, then lunch. For Elizabeth, cooking wasn’t some preordained feminine duty. As she’d told Calvin, cooking was chemistry. That’s because cooking actually is chemistry.
    @200° C/35 min = loss of one H 2 O per mol. sucrose; total 4 in 55 min = C 24 H 36 O 18 she wrote in a notebook. “So that’s why the biscuit batter is off.” She tapped her pencil against the countertop. “Still too many water molecules.”
    “How’s it going?” Calvin called from the next room.
    “Almost lost an atom in the isomerization process,” she called back. “I think I’ll make something else. Are you watching Jack?”
    She meant Jack LaLanne, the famous TV fitness guru, a self-made health aficionado who encouraged people to take better care of their bodies. She didn’t really have to ask—she could hear Jack shouting “Up down up down” like a human yo-yo.
    “I am,” Calvin called back, breathless, as Jack demanded ten more. “Join us?”
    “I’m denaturing protein,” she shouted.
    “And now, running in place,” urged Jack.
    Despite what Jack said, running in place was the one thing Calvin would not do. Instead he did extra sit-ups while Jack ran in place in what very much looked like ballet slippers. Calvin didn’t see the point of running indoors in ballet slippers; instead, he always did his running outside in tennis shoes. This made him an early jogger, meaning that he jogged long before jogging was popular, long before it was even called jogging. Unfortunately, because others were unfamiliar with this jogging concept, the police precinct received a steady stream of calls regarding a barely clad man running through neighborhoods blowing short, hard bursts of air out between his purplish lips. Since Calvin always ran the same four or five routes, police soon became accustomed to these calls. “That’s not a criminal,” they’d say. “That’s just Calvin. He doesn’t like to run in place in ballet slippers .