Scientific American Podcast: 60-Second Earth Folgen

Thanks to us humans, there's a new type of rock in the geologic record. And it's part plastic. David Biello reports  

When gas mileage cost was explicitly revealed on new car window stickers, potential consumers were more likely to choose the most efficient vehicle. David Biello reports.  

In a May 21 speech Pope Francis warned that despoiling the environment would come back to haunt humanity. David Biello reports