Are hitting, biting and bullying normal behaviors in young children? When do such behaviors start? Do they stop all on their own? What can you do to make sure they don’t continue? Why are some children more aggressive ..
With another baby boomer turning 50 every eight seconds, by 2010 there will be more Americans over 55 than under 18 for the first time in history. This stunning reality is impacting every community in the country. But ol..
Scientist and climate change expert Michael Oppenheimer talks about the deterioration of air quality in the United States from the 19th century through the post-War years. He focuses on the contribution of the automobile..
Scientist and climate change expert Michael Oppenheimer talks about the increase in air pollution in the United States and elsewhere through the 1960's. He notes that this increase was in large part responsible for legis..
Scientist and climate change expert Michael Oppenheimer compares air quality problems and challenges in Mexico City and China. He notes that smog problems in Mexico City are similar to those found in Los Angeles.
Scientist and climate change expert Michael Oppenheimer talks about the fact that air pollution circulates globally and that, regardless of its origins, the impact of such pollution can be felt anywhere in the world.
China is in a period of rapid economic development. Its size, both in land mass and human population, and the fact that it uses primarily coal to fuel its industrialization, make for a current air pollution problem and t..
In the area of zero emissions technology, fuel cells are very promising. When using hydrogen in a fuel cell, the only byproduct is water vapor. The technology can be used in automobiles, buses, and power plants. The main..
This program analyzes how flight evolved not once but four times, in very different ways. Presenting a number of theories, the program examines how insects, pterosaurs, birds, and bats each took to the sky. Bug wings tha..
A patient with a tracheostomy tube has many care needs. Most important is the maintenance of airway patency. Other needs are preventing infection of either the airway or the stoma, providing some form of effective commun..