Science Struck
Science Struck: Uses of Crucible Tongs
Discusses what tongs are used for and why crucible tongs are a very important tool in a laboratory and other settings. Describes the different types of crucible tongs, their uses, and some safety tips.
PBS
Pbs Learning Media: Dna on the Witness Stand
Dr. Eric Lander of the Human Genome Project explains the use of DNA as forensic evidence. He describes the process and need for standards in testing laboratories and discusses the use of DNA evidence as a human rights tool.