Oxygen levels

Oxygen levels were key to early animal evolution: Study

Oxygen levels were key to early animal evolution: Study

High level of oxygen in ancient oceans were crucial for the emergence of skeletal animals 550 million years ago, a new study suggests. The study is the first to distinguish between bodies of water with low and high levels of oxygen.

Sep 25, 2016, 19:31 PM IST

New tools to breed 'anti-flood' cereal crops

 In a significant find, scientists have identified the mechanism used by plants in stress conditions to sense low oxygen levels that may lead to the introduction of cereal crops better able to tolerate flooding.

Feb 08, 2015, 16:51 PM IST

Oceans face `deadly trio` of threats, study says

The world`s oceans are under greater threat than previously believed from a "deadly trio" of global warming, declining oxygen levels and acidification, an international study said on Thursday.

Oct 03, 2013, 21:30 PM IST