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Carbon can be found in just about everything on earth, including proteins, DNA, and fats. Scientists around the world are working together to measure carbon dioxide in our atmosphere and oceans. This public radio story introduces us to a scientist who is passionate about the global climate crisis. The story challenges students’ math skills and gets them thinking about their carbon footprint.
Story Length: 8:21
Ocean Gazing
AIR DATE: 10/16/2009
As more U.S. states and countries experience drought, scientists are looking at ways to help the clouds produce rain. It's called cloud seeding or weather modification and it's not proven to work. This public radio story looks at the scientific process and the controversy over cloud seeding.
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Global warming is expected to increase summer temperatures and cities will be even hotter, as concrete and asphalt retain heat. The combination is expected to increase health risks. This public radio story looks at how the sun mixes with city pollution to create ozone that's irritating to your lungs, especially if you have breathing problems like asthma.
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A United Nations report in 2014 shows that human activities are changing the planet. The scientists are more confident in their conclusions that humans are causing global warming. There are rising sea levels, higher temperatures and impacts on wildlife. This conversation with a public radio reporter looks at the long term trend in global temperatures and what humans can do to reverse the trend.
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Scientists say it’s nearly certain that human activity and fossil fuels are warming the planet. The mainstream discussion focuses on alternative energy and reducing fossil fuel emissions. But the field of geoengineering is looking for more large scale and proactive things we can do to offset warming. Some see this as an exciting way to help the planet, others as a threat. Listen to learn about the strategies geoengineers are exploring to prevent further global warming.
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