The Countdown is a biweekly video podcast highlighting the top space news stories from the past two weeks. In this episode: Martian Ancestors?, China Moon Landing, Greenland's Grand Canyon, ISS Printer and Tabletop Big Bang.
The Black Hole in the Middle of our Galaxy Looks like This
Seth Fletcher, Jason Drakeford, Tulika Bose and Jeffery DelViscio
AI Helps Small City Pull Toxic Lead Water Service Lines from the Ground Faster
COVID Dominated Their Science Lives: Here's What Four Experts Learned over Two Years
Did Your Catalytic Converter Get Stolen? The Pandemic--and Rhodium--Could Share Some Blame
Dominic Smith and Andrew Robinson
What is 'The Cloud' and How Does it Pervade Our Lives?
Michael Tabb, Jeffery DelViscio and Andrea Gawrylewski
A Look Inside the Complex Gel on Your Thanksgiving Table
Spektrum and Scientific American Staff