Deej - 72 min version (With Subtitles)
Abandoned by his birth parents and unable to speak for himself, DJ Savarese ("Deej") found not only a loving family but also a life in words, which he types on a text-to-voice synthesizer. As he dreams of college, he con..
Deep Connections: Deep Ocean Circulation and Global Climate
Some scientists are concerned that just as thermohaline circulation has changed significantly over time, it could change again and possibly cause abrupt climate change in both the United States and Europe.
Deep Connections: Differences Between Deep Ocean and Surface Currents
The flow of ocean currents follows predictable patterns governed by a variety of physical factors. For surface currents, which include water flow horizontally in the upper four hundred meters of the ocean, wind is the pr..
Deep Connections: Ocean Observation Systems
While tracers have proven immensely valuable as tools with which to monitor and analyze ocean circulation, the sheer size of the world ocean presents an enormous data-gathering challenge. Many oceanographers believe the ..
Deep Connections: Thermohaline Circulation
The movement of water due to differences in density is called thermohaline circulation. This process is responsible for not only the vertical movement of ocean water, but for the circulation of the global ocean as a whol..
Deep Connections: Tracers
A tracer is a property or substance that can be used to track the movement of individual water masses. While the utility of specific tracers varies according to the locale and circumstance, tracers as a group provide a ..
Deep Connections: Water Masses
Water masses are layers of water distinguished by a particular temperature and salinity. Understanding how water masses form and move around is critical in understanding global climate.
Default : The Student Loan Documentary
Just a few years after the sub-prime mortgage crisis, there are ominous signs that the student loan market is on the verge of collapsing, yet another casualty of predatory lending practices. This video brings this perilo..
Defining and Calculating Productivity
An accurate measure of productivity can be a useful tool in defining problems and deciding where to direct resources and energy. There are many ways to calculate productivity, but almost all begin with a simple formula: ..
Degradation of the Environment, The
Scientist and climate change expert Michael Oppenheimer talks about what he calls the two driving forces behind the degradation of the environment: the technologies at our disposal and the number of people using them.