Claim: [ocean acidification was ] First referenced in a peer-reviewed study in Nature in 2003

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: A National Research Council study released in April 2010 likewise concluded that "the level of acid in the oceans is increasing at an unprecedented rate".

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: A 2013 study claimed acidity was increasing at a rate 10 times faster than in any of the evolutionary crises in Earth's history.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In a synthesis report published in Science in 2015, 22 leading marine scientists stated that CO 2 from burning fossil fuels is changing the oceans' chemistry more rapidly than at any time since the Great Dying, Earth's most severe known extinction event, emphasizing that the 2 °C maximum temperature increase agreed upon by governments reflects too small a cut in emissions to prevent "dramatic impacts" on the world's oceans, with lead author Jean-Pierre Gattuso remarking that "The ocean has been minimally considered at previous climate negotiations.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: A study in 2008 examining a sediment core from the North Atlantic found that while the species composition of coccolithophorids has remained unchanged for the industrial period 1780 to 2004, the calcification of coccoliths has increased by up to 40% during the same time.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Ocean acidification is the increase in the acidity of the Earth's oceans caused by the uptake of carbon dioxide () from the atmosphere.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO 2) from the atmosphere.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Ocean acidification is an effect of rising concentrations of [[Carbon dioxide|CO]] in the atmosphere, and is not a direct consequence of global warming.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Also, the Intergovernmental Panel on Climate Change (IPCC) writes in their Climate Change 2007: Synthesis Report: "The uptake of anthropogenic carbon since 1750 has led to the ocean becoming more acidic with an average decrease in pH of 0.1 units.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: As the concentration of carbon dioxide increases in the atmosphere, the increased uptake of carbon dioxide into the oceans is causing a measurable decrease in the pH of the oceans, which is referred to as ocean acidification.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Ocean Growing More Acidic Faster Than Once Thought; Increasing Acidity Threatens Sea Life".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Carbon dioxide emissions cause ocean acidification, the ongoing decrease in the pH of the Earth's oceans as CO 2 becomes dissolved.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Addition of carbon dioxide to the ocean water makes the oceans more acidic.