Résultats Éditeur "The Great Courses" dans Sciences et mathématiques

Great Heroes and Discoveries of Astronomy takes you around the world and across time in search of the unsung heroes who, in many ways, are just as important to the story of astronomy as Hubble, Einstein, and Sagan. Whether they stood on the shoulders of giants or themselves offered shoulders for giants to stand on, the heroes of astronomy you’ll meet in these 24 lessons are a collective of the brightest and most daring minds in science.

Today, with relatively easy access to our DNA ancestry, we have more data about ourselves and family history than previous generations could have imagined. In the 12 fascinating lessons of Identity in the Age of Ancestral DNA, Anita Foeman, PhD, professor of communication and media, and founder and primary investigator of the DNA Discussion Project at West Chester University, takes us behind the scenes to examine what really happens when individuals receive their personal DNA ancestry results.

The year is 8000 B.C. A man wanders across a field of prairie grasses in search of edible berries and roots and wild game to feed his family. As he walks, the tips of the grasses brush against him, releasing seeds. He collects a few of these seeds and brings them back to his camp. Later, he notices that when they fall on earth, they begin to sprout, and a new plant grows. In small moments like these, the path of Homo sapiens is changed forever.

We’re living in a golden age of scientific breakthroughs and technological advancements. Now, you have the chance to dig into some of the most fascinating and important scientific advancements in recent years. Unexpected, consequential, and often counterintuitive, 12 Revolutionary Discoveries That Could Change Everything offers an inspiring introduction to science in the 21st century. Taught by Scientific American editor in chief Laura Helmuth, these eye-opening lectures will satiate even the most inquisitive mind.

Spaceflight is notoriously dangerous. Beyond launch mishaps and equipment failures, astronauts face serious health problems from long-term weightlessness and high-energy radiation. Not to mention, the space environment is a near-perfect vacuum that can quickly kill anyone who is unprotected. Drawing on the hard-won insights of NASA astronauts and space researchers, this 12-lecture course presents the perils of spaceflight and what experts have done to make them survivable. It also deals with livability in space, including nutrition, sleep, environmental control, and personal hygiene.