How a synapse works

How a synapse works

In the last module, we took first steps towards understanding the electrical properties of individual neurons. We learned how electrical forces and diffusion give rise to membrane potentials, and we learned how cells can generate and propagate signals called action potentials, or ‘spikes’, along the …

Using the Ladder of Inference

Using the Ladder of Inference

[MUSIC PLAYING] KATHRYN PARKER BOUDETT: One thing we’ve learned in our work is that human beings have a tendency to see patterns, make inferences and judgments, and draw conclusions quite quickly from just a little bit of data. This is an important skill. It allows …

Boston and maritime trade

Boston and maritime trade

ED GLAESER: Boston was never a city of kings or conquerors. The city’s tallest building long bore the name of a smuggler, John Hancock. By the 19th century, Boston was trumpeting its intellectual ambitions as the Athens of America. But all that learning was built …

Hinduism in brief

Hinduism in brief

What has come to be called the Hindu tradition is a rich fabric of civilization, interweaving numerous threads and hues of religious life. The intricate blend of Aryan, Dravidian, and various tribal cultures has resulted in a rich variety of religious practices, a diverse region …

Integrating my online course to improve the classroom experience

Integrating my online course to improve the classroom experience

Welcome everyone. Thank you all for being here. This is our seventh year in HILT. And just for those of you who don’t know about our organization, we’re a university-wide organization designed to seed innovation in teaching and learning and to convene people across our …

Justice | HarvardX on edX | Course About Video

Justice | HarvardX on edX | Course About Video

[MUSIC PLAYING] What’s the right thing to do? That’s a question I’ve asked thousands of students at Harvard University in my class Justice. Would it be just to torture the suspect to get the information? Do you think that a person with a bad parent …

Lifeboat ethics: Would you sacrifice one life to save many?

Lifeboat ethics: Would you sacrifice one life to save many?

[MUSIC] In the summer of 1884, four English sailors were stranded at sea in a lifeboat in the south Atlantic, over 1,000 miles from land. Dudley was the captain, Stephens, the first mate, and Brooks, a sailor. The fourth member of the crew was the …

edX: The Future of Online Education

edX: The Future of Online Education

L RAFAEL REIF: These very early stages where something’s so novel, so new, so different, is for many faculty and students at MIT very exciting, at the same time and scary. It is something. It’s different. It is potentially disruptive. MICHAEL D SMITH: Harvard and …

Electron transport chain

Electron transport chain

RL: All eukaryotic cells, from yeast to those that make up the human body, contain membrane-bound organelles with specialized functions. Mitochondria are double-membraned organelles that harness most of the energy that cells need to grow and reproduce. Nearly all of this energy comes from reactions …

Science & Cooking: From Haute Cuisine to Soft Matter Science | HarvardX on edX | About Video

Science & Cooking: From Haute Cuisine to Soft Matter Science | HarvardX on edX | About Video

MICHAEL BRENNER: In science, we attempt to better understand the world in which we live. Hi, I’m Michael Brenner. I’m an applied mathematician at Harvard, and I’d like to welcome you to Harvard’s class on Science and Cooking. DAVID WEITZ: Hi, I’m not Michael Brenner. …