Suddenly, the forest erupted in frightening animal roars all around him. He glimpsed a large animal charging him. Richard Levine turned and fled, feeling the adrenaline surge of pure panic, not knowing where to go, knowing only that it was hopeless. He felt a heavy weight suddenly tear at his backpack, forcing him to his knees in the mud, and he realized in that moment that despite all his planning, despite all his clever deductions, things had gone terribly wrong, and he was about to die.
School
"When we consider mass extinction from a meteor impact," Richard Levine said, "we must ask several questions. First, are there any impact craters on our planet larger than nineteen miles in diameter-which is the smallest size necessary to cause a worldwide extinction event? And second, do any craters match in time a known extinction? It turns out there are a dozen craters this large around the world, of which five coincide with known extinctions. .
Kelly Curtis yawned in the darkness of her seventh-grade classroom. Sitting at her desk, she propped her chin on her elbows, and tried to stay awake. She already knew this stuff. The TV set in front of the class showed a vast cornfield, seen in an aerial view, the curving outlines faintly visible. She recognized it as the crater in Manson. In the darkness, Dr. Levine's recorded voice said, "This is the crater in Manson, Iowa, dating from sixty-five million years ago, just when dinosaurs became extinct. But was this the meteor that killed the dinosaurs?"
No, Kelly thought, yawning. Probably the Yucatán peninsula. Manson was too small.
We now think this crater is too small," Dr. Levine said aloud. "We believe it was too small by an order of magnitude, and the current candidate is the crater near Merida, in the Yucatán. It seems difficult to imagine, but the impact emptied the entire Gulf of Mexico, causing two-thousand-foot-high tidal waves to wash over the land. It must have been incredible. But there are disputes about this crater, too, particularly concerning the meaning of the cenote ring structure, and the differential death rates of phytoplankton in ocean deposits. That may sound complicated, but don't worry about it for now. We'll go into it in more detail next time. So, that's it for today."
The lights came up. Their teacher, Mrs. Menzies, stepped to the front of the class and turned off the computer which had been running the display, and the lecture.
"Well," she said, "I'm glad Dr. Levine gave us this recording. He told me he might not be back in time for today's lecture, but he'll be with us again for sure when we return from spring break next week. Kelly, you and Arby are working for Dr. Levine, is that what he told you?"
Kelly glanced over at Arby, who was slouched low in his seat, frowning.
"Yes, Mrs. Menzies," Kelly said.
"Good. All right, everyone, the assignment for the holidays is all of chapter seven" - there were groans from the class - "including all of the exercises at the end of part one, as well as part two. Be sure to bring that with you, completed, when we return. Have a good spring break. We'll see you back here in a week."
The bell rang; the class got up, chairs scraping, the room suddenly noisy. Arby drifted over to Kelly. He looked up at her mournfully. Arby was a head shorter than Kelly; he was the shortest person in the class. He was also the youngest. Kelly was thirteen, like the other seventh-graders, but Arby was only eleven. He had already been skipped two grades, because he was so smart. And there were rumors he would be skipped again. Arby was a genius, particularly with computers.
Arby put his pen in the pocket of his white button-down shirt, and pushed his horn-rim glasses up on his nose. R. B. Benton was black; both his parents were doctors in San Jose, and they always made sure he was dressed very neatly, like a college kid or something. Which, Kelly reflected, he would probably be in a couple of years, the way he was going.
Standing next to Arby, Kelly always felt awkward and gawky. Kelly had to wear her sister's old clothes, which her mother had bought from Kmart about a million years ago. She even had to wear Emily's old Reeboks, which were so scuffed and dirty that they never came clean, even after Kelly ran them through the washing machine. Kelly washed and ironed all her own clothes; her mother never had time. Her mother was never even home, most of the time. Kelly looked enviously at Arby's neatly pressed khakis, his polished penny loafers, and sighed.
Still, even though she was jealous, Arby was her only real friend - the only person who thought it was okay that she was smart. Kelly worried that he'd be skipped to ninth grade, and she wouldn't see him any more.
Beside her, Arby still frowned. He looked up at her and said, "Why isn't Dr. Levine here?"
"I don't know," she said. "Maybe something happened."
"Like what?"
"I don't know. Something."
"But he promised he would be here," Arby said. "To take us on the field trip. It was all arranged. We got permission and everything."
"So? We can still go."
"But he should be here," Arby insisted stubbornly. Kelly had seen this behavior before. Arby was accustomed to adults being reliable. His parents were both very reliable. Kelly wasn't troubled by such ideas' "Never mind, Arb," she said. "Let's just go see Dr. Thorne ourselves."
"You think so?"
"Sure. Why not?"
Arby hesitated. "Maybe I should call my mom first,"
"Why?" Kelly said. "You know she'll tell you that you have to go home. Come on, Arb. Let's just go."
He hesitated, still troubled. Arby might be smart, but any change in plan always bothered him. Kelly knew from experience he would grumble and argue if she pushed for them to go alone, She had to wait, while he made up his own mind.