NASA | Sea Level Rising: Interview with Tom Wagner

The video discusses the steady rise in global sea levels over the past 20 years, primarily due to polar ice melt and ocean expansion. Dr. Tom Wagner from NASA explains the use of satellite data to measure these changes and highlights the topography of oceans. The causes of sea level rise are attributed to thermal expansion and ice melt from glaciers and ice sheets. NASA's efforts include developing technologies, field studies, and modeling to predict future sea level changes. Viewers are directed to NASA's website for more information and resources.

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