Stabilizing Continents

Himalayan Snow Warming

Three physicists used data collected from 165 stations in the Himalayan-Tibetan region and a regional climate model to determine the effect of black carbon aerosols (BCAs) on the climate of South Asia. Their analysis revealed warming at high elevations due to BCAs. Such atmospheric heating reduces the global mean precipitation, which impacts the summer monsoons in South Asia. Thus, all of South Asia is facing a climate change crisis with both dire economic and health consequences. In this episode, astrophysicist Hugh Ross explains that replacing coal and biofuels with natural gas as an energy source is the quickest and most economical solution to South Asia’s climate crisis.   

Stabilizing Continents

Continents play a critical role in Earth’s capacity to support a thriving and diverse array of life. Scientific studies show that some present-day continents formed at least 3 billion years ago. Those studies have assumed that the same process responsible for how our continents look today also ensured their stability. However, a recent paper highlights some important processes needed for large pieces of continents to stick around for billions of years. In this episode, astrophysicist Jeff Zweerink discusses how those processes reveal more fine-tuning of Earth to support life.

Links and Resources:

• Subaerial Weathering Drove Stabilization of Continents
• Elevation-Dependence of Warming Due to Aerosol-Induced Snow Darkening over the Himalayan-Tibetan Region
• Climate-Relevant Properties of Black Carbon Aerosols Revealed by In Situ Measurements: A Review