New research into the genealogies of early Canadian pioneers suggests that the settlers who were first to colonize a new region produced more offspring than the settlers who followed them.
AAAS has launched an innovative Web site with more than 600 multiple-choice test questions to help educators assess more precisely what students know about key ideas in science and—just as importantly—the incorrect ideas they have.
Yvette Roubideaux decided she wanted to become a physician when she was 16. A member of the Rosebud Sioux Tribe in South Dakota, she had seen the delays and staff shortages at health facilities on the reservation as she was growing up. She felt there was a need for more American Indian doctors to help improve the situation.