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.

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.