Rod Heelis on the clarity of satellite radio and GPS signals depends on the ionosphere. Storms in space can interfere with and disrupt earthly communications.
Neil deGrasse Tyson told EarthSky, "I think the most remarkable fact about the universe is that the elements that comprise the human body and life on Earth are traceable to the actions of stars."
Janaki Alavalapati, head of the Department of Forestry at Virginia Tech, said harvesting trees and plants for fuel might improve the health of forests.
Forest scientist Janaki Alavalapati talks about how a forest industry biofuel might boost rural economies and be a possible source of clean, renewable energy.
Baker said a slowdown of ocean circulation, caused by global warming, could mean less heat brought by the oceans to Earth's high latitudes. And that means, in a warming world, Europe could get cold.
Geologist James Devine talks about how scientists could help Afghanistan manage the country's petroleum and copper reserves to revitalize the nation's troubled economy.
Experts say usable oil can be extracted from a rocky substance, called oil shale, that's abundant in western North America. But geologist Craig Cooper speaks of trade-offs in the energy and water extraction process.
She describes these dead zones, off the northwestern coast of the United States, as "virtual wastelands of dead crabs, dead worms, dead anemones, just littering the sea floor."
The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Sun, Human, Tonight. Since 1994.