This internal left-right asymmetry is believed to begin at the very early stage of development -- when a tiny embryo is divided into two parts during a process called gastrulation. This process ...

Riley Black’s new book, When the Earth was Green, uses the latest research to envision the ancient worlds of our favorite prehistoric animals.

Columbia scientists have found specialized neurons in the brains of mice that order the animals to stop eating. Though many feeding circuits in the brain are known to play a role in monitoring food ...

Hiawatha Bray’s article about Active Surfaces’ solar technology ("Harnessing the sun: A Woburn startup’s flexible approach to solar cells could give the US industry a second chance ...

Recent and archival articles, essays, photographs, videos, infographics, writing prompts, lesson plans and more. By The Learning Network We asked students, “What are you thinking and feeling ...