Gram staining. Gram staining or Gram stain, also called Gram's method, is a method of staining used to differentiate bacterial species into two large groups (gram-positive and gram-negative). The name comes from the Danish bacteriologist Hans Christian Gram, who developed the technique.
Horizon Oil Sands. Horizon Oil Sands The Horizon Oil Sands project (or Horizon) is an oil sands mining and upgrading project. Horizon is 100% owned and operated by Canadian Natural Resources Limited.
Five years ago, BP's out-of-control oil well deep in the Gulf of Mexico exploded. Eleven workers were killed on the Deepwater Horizon rig. But it was more than a deadly accident â the blast unleashed the nation's worst offshore environmental catastrophe. In the spring and summer of 2010, oil gushed from the Macondo well for nearly three months.