Tag Archives: environment

Native American societies before contact | Period 1: 1491-1607 | AP US History | Khan Academy

Native American societies before contact | Period 1: 1491-1607 | AP US History | Khan Academy

– [Instructor] Often when we think about the beginning of American history, we think 1776, with the Declaration of Independence, or maybe 1492, when Columbus arrived in the Americas. But the history of America really begins about 15,000 years ago, when people first arrived in the Americas. In this video, I want to provide a …

Joel Cohen: An Introduction to Demography (Malthus Miffed: Are People the Problem?)


My name is Joel Cohen I’m Professor of Populations at the Rockefeller University and at Columbia University in New York City.   My background is partially in public health and partially in applied mathematics. WHY SHOULD YOU STUDY DEMOGRAPHY? Why should you consider taking a course in demography in college? 

You will be growing up …

Citizen scientists win big in upstate New York

Citizen scientists win big in upstate New York

[MUSIC] NARRATOR: THERE ARE MANY WAYS TO MAKE YOUR COMMUNITY A SAFER PLACE. ONE WAY IS THROUGH CITIZEN SCIENCE. RESIDENTS AND COMMUNITY GROUPS COLLECT DATA TO BETTER UNDERSTAND THEIR LOCAL ENVIRONMENT AND ADDRESS ISSUES OF CONCERN. THE U.S. ENVIRONMENTAL PROTECTION AGENCY COLLABORATES WITH THESE CITIZEN SCIENTISTS TO REDUCE POLLUTION IN TONAWANDA, NEW YORK. THE CLEAN …