Enzymes proofread DNA, reducing the error rate to one in one billion base pairs. Learn about the important process and so much more with the help of a presentation. It opens with the history of DNA and the major scientific contributions...

Hans Krebs won the Nobel Prize for his discovery of what scientists now know as the Krebs cycle. Named after him, the Krebs cycle exists as only one system of the larger set, working together to keep human bodies functioning. The...

In 1977, scientists discovered hot springs in the middle of deep, cold ocean waters near the Galapagos Islands. Scholars research the chemical reactions that explain what scientists found at the Lost City. A discussion connects many...