Archive: 12/13/2007

Immune system may target some brain synapses

A baby's brain has a lot of work to do, growing more neurons and connections. Later, a growing child's brain begins to pare down these connections until it develops into the streamlined brain of an adult.

Dec 13, 2007 4.7 / 5 (12) 0

Foreign ozone emissions lower U.S. air quality

When it comes to environmental impacts, no nation is an island. A recent study from the Nelson Institute for Environmental Studies at the University of Wisconsin-Madison finds that up to 15 percent of U.S. air pollution comes ...

Dec 13, 2007 4 / 5 (1) 1

Probing Question: What are carbon offsets?

While most Americans are aware that they increase carbon dioxide in the atmosphere by burning fossil fuel to drive their cars and heat their homes, they tend to think less about the greenhouse impacts of other daily activities.

Dec 13, 2007 2.5 / 5 (2) 2

Coral Reefs Unlikely to Survive in Acid Oceans

Carbon emissions from human activities are not just heating up the globe, they are changing the ocean’s chemistry. This could soon be fatal to coral reefs, which are havens for marine biodiversity and underpin ...

Dec 13, 2007 3.2 / 5 (22) 6