This is really a historic breakthrough. After decades of effort, we are officially turning nuclear waste into glass at ...
A lake in Canada serves as the best proof that humans have caused lasting and significant environmental changes to the planet since the mid-20th century — so much so that a group of scientists says a ...
This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...