Increased methane emissions linked to fossil fuel usage: Study

The video discusses how human activities, particularly the use of fossil fuels, have significantly contributed to the rise in methane emissions. Scientists conducted a study using ice cores from Greenland to measure carbon 14 isotopes, which helped distinguish between natural and manmade methane emissions over 200 years. The study found that before 1870, most methane emissions were biological, but post-1870, there was a significant increase in human-produced methane, coinciding with the rise in fossil fuel use. The findings link these emissions to the current climate crisis, suggesting that reducing fossil fuel use could mitigate global warming.

What method did scientists use to measure the amount of carbon 14 isotopes in the study?

• Studying ocean currents

• Melting ice cores

• Analyzing air quality

• Collecting soil samples

How does fossil methane differ from biological methane?

• Fossil methane contains carbon 14

• Both contain carbon 14

• Biological methane lacks carbon 14

• Fossil methane lacks carbon 14

What was the primary source of methane emissions before 1870?

• Industrial processes

• Fossil fuels

• Volcanic activity

• Biological sources

What coincided with the increase in human-produced methane emissions after 1870?

• Increase in fossil fuel use

• Reduction in industrial activities

• Rise in renewable energy

• Decrease in coal usage

What action did scientists suggest to mitigate the threat of global warming?

• Ignore methane emissions

• Reduce fossil fuel use

• Increase fossil fuel use

• Enhance methane production