Archives

Biochemistry: September 2015


By analyzing iron isotopes against the uranium content in the jasper rock from the ancient ocean of the Barberton Greenstone Belt in South Africa, scientists have found a defined vertical redox gradient, called a redoxcline, showing a change in the level of oxygenation from the deeper part of the ocean leading to the shallower portion.

Studying Carbon-13 (13C) metabolism in a microbial community can be a time-consuming and tricky prospect. This is because scientists often have to separate a single species out of the mix for study.