The first steps at a crime scene are paramount to preserving findings. Criminal investigation provides a array of procedures to analyze physical traces and recreate what happened. From cellular assessment to firearms assessments, and latent recognition, each area serves a specific position in the search for facts. Accurately assessing this evide… Read More

Before contemporary methods of organizing elements, scientists attempted to organize the known elements. One early attempt was made by Johann Wolfgang Döbereiner, a German chemist who observed a striking pattern among certain groups of compounds. He proposed that three elements with similar traits could be grouped together as these sets, forming… Read More