Carbon emissions have put marine species at risk of ecological catastrophe.
![Marine Species Face Extinction Risk, Courtesy Carbon Emissions Marine Species Face Extinction Risk, Courtesy Carbon Emissions](https://www.medindia.net/afp/images/Sweden-environment-oceans-climate-fish-animals-8964.jpg)
The knock-on effects can lead to widespread mass extinction of marine species - and is believed to have done in the past.
In the last 100 years atmospheric carbon dioxide has risen to about 30 percent above pre-industrial levels.
New research has shown that even during periods of past mass extinctions the ocean acidity rate nowhere near matched what it is is today.
Source-IANS