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.
The accidental oil spill from BPâs drilling rig, Deepwater Horizon occurred on April 20, 2010 in the Gulf of Mexico, causing the biggest spill in the history of oil spills and prompting an expensive clean-up operation.